Using basic geometry and area formula for calculation of length, Apply fencing on only 3 side , The answer is 109.54 feet.
What do you mean by geometry?A subfield of mathematics called geometry examines the dimensions, placements, angles, and sizes of objects.
What is a rectangle and it's formula for area?A plane shape, as opposed to a square, with four straight sides and four right angles, particularly one with uneven neighboring sides.
Area of rectangle is:
A= l x b
area=750 square feet.
for attaining minimum area , these area must be fitted in square,
so, \(l = \sqrt {750}\)
=27.38 feet
since, one side is taken by barn, l should be extended 4 times, 2 on 1 side and 2 on sides each.
Total length of fence = 4 * 27.38
= 109.54 feet
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anna walks her dog at a constant rate of 12 blocks in 8 minutes, show the total time it takes to walk 12,24,36, and 48 blocks
Answer: 8 minutes, 16 minutes, 24 minutes, 32 minutes
Step-by-step explanation: 12x2=24. 8x2=16. 12x3=36. 8x3=24. 12x4=48. 8x4=32.
The total time taken to cover 48 blocks at the same speed will be 32 minutes.
What are work and time?
Work is the completion of any task for example if you have done your homework in 5 hours then you have done 5 hours.
Another example of work is that if you have done your food by 1 hour it means your work duration is 1 hour so work is basically the time duration of any task which you have done.
Speed of dog;
Speed = 12 block in 8 minutes ⇒ 12/8 blocks/minutes
Now,
At the same speed
Speed = 48 blocks in T time
So,
12/8 = 48/T
By cross multiplication
T = 48 × 8/12
T = 32
Hence "The total time taken to cover 48 blocks at the same speed will be 32 minutes".
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A study shows that at the end of a school day teenagers typically have 40% of their cell phone battery left when plugged in phone charge at a rate of 3% per minute when using the newest fast charger.
a: write an inequality to represent how many more minutes are needed to reach at least 80% battery life.
b. use the inequality to determine the how many more minutes it will take to have at least 80% battery life
The inequality that represents the more minutes needed to reach 80% of the battery is 3x + 40 ≤ 80. And the number of minutes will be 13.33 minutes.
What is inequality?Inequality is defined as an equation that does not contain an equal sign.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
Let 'x' be the number of minutes and 'y' be the total battery percentage. Then the equation is given as,
y = 3x + 40
The inequality that represents the more minutes are needed to reach 80 of battery is given as,
3x + 40 ≤ 80
Simplify the inequality, then we have
3x + 40 ≤ 80
3x ≤ 40
x ≤ 13.33 minutes
The inequality that represents the more minutes needed to reach 80% of the battery is 3x + 40 ≤ 80. And the number of minutes will be 13.33 minutes.
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3. Roll the die on the game 8 times and record which car would move. What is the empirical probability of how many times the red car moves in 8 rolls
The empirical probability of the red car moving a specific number of times in 8 rolls of the die can be estimated by rolling the die many times and counting the number of times the red car moves a specific number of times, then dividing this count by the total number of rolls.
Assuming that the probability of the red car moving is independent and equal for each roll, the number of times the red car moves in 8 rolls can be modeled using a binomial distribution.
Let's say that the probability of the red car moving in a single roll is p, and we want to find the empirical probability of the red car moving k times in 8 rolls.
To find the empirical probability, we would need to roll the die 8 times and record how many times the red car moves. We can repeat this process many times to collect a large sample of outcomes and estimate the probability based on the proportion of times the red car moves k times in 8 rolls.
For example, if we roll the die 8 times and observe that the red car moves 4 times, we would record that as 4 occurrences of the red car moving in 8 rolls. We can repeat this process many times and record the number of occurrences for each possible value of k (from 0 to 8).
Then, we can calculate the empirical probability of the red car moving k times in 8 rolls as:
The empirical probability of k red car moves = (number of occurrences of k red car moves) ÷ (total number of trials)
For each value of k, we would calculate this empirical probability based on the collected sample.
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write the quadratic equation
Answer:
y=2(x+3)^2-4
Step-by-step explanation:
Vertical stretch happens when you multiply the y value by an integer greater than 1.
Refer to the various selling prices of various homes in a community that follow the normal distribution with mu (population mean) = $276,000 and sigma (standard deviation – measure of dispersion) = $32,000. Calculate the probability that the next house in the community will sell for between $276,000 and $325,000.
Answer:
0.43715
Step-by-step explanation:
We solve using z score calculator
z = (x-μ)/σ, where
x is the raw score
μ is the population mean = $276,000
σ is the population standard deviation = 32,000
For x = $276,000
z = 276,000 - 276,000/32000
z = 0
Probability value from Z-Table:
P(x = 276000) = 0.5
For x = $325,000
z = 325,000 - 276,000/32000
z = 1.53125
Probability value from Z-Table:
P(x = 325000) = 0.93715
The probability that the next house in the community will sell for between $276,000 and $325,000 is
P(x = 325000) - P(x = 276000)
= 0.93715 - 0.5
= 0.43715
If a||b m<2=63 and m<9=105 find the measure of each missing angle
Answer/Step-by-step explanation:
Given, m<2 = 63°; m<9 = 105°, and line a is parallel to b:
a. m<1 + m<2 = m<9 (alternate exterior angles are congruent)
m<1 + 63° = 105° (substitution)
Subtract 63 from each side
m<1 = 105° - 63°
m<1 = 42°
b. m<3 + m<2 + m<1 = 180° (angles in a straight line)
m<3 + 63° + 42° = 180° (substitution)
m<3 + 105° = 180°
m<3 = 180° - 105°
m<3 = 75°
c. m<4 = m<1 (vertical angles are congruent)
m<4 = 42°
d. m<5 = m<2 (vertical angles are congruent)
m<5 = 63°
e. m<6 = m<3 (vertical angles are congruent)
m<6 = 75°
f. m<7 = m<9 (vertical angles are congruent)
m<7 = 105°
g. m<8 = m<6 (alternate interior angles are congruent)
m<8 = 75°
h. m<10 = m<8 (vertical angles are congruent)
m<8 = 75°
i. m<11 = m<4 (alternate interior angles)
m<11 = 42°
j. m<12 = 180° - m<11 (linear pair theorem)
m<12 = 180° - 42° (substitution)
m<12 = 138°
k. m<13 = m<11 (vertical angles are congruent)
m<13 = 42° (substitution)
l. m<14 = m<12 (vertical angles are congruent)
m<14 = 138°
Suppose we want to test H0: μ = 30 versus Ha: μ < 30. Which of the following possible sample results based on a sample of size 36 gives the strongest evidence to reject H0 in favor of Ha?
A) = 28, S = 6
B) = 27, S = 4
C) = 32, S = 2
D) = 26, S = 9
The sample of size 36 provides the strongest evidence to reject H0 in favor of Ha
B) = 27, S = 4.
An testing whether the population mean (μ) is less than 30 based on a sample of size 36. The test statistic commonly used in this scenario is the t-statistic which follows a t-distribution.
The formula for the t-statistic is
t = (X - μ) / (S / √(n))
where:
X is the sample mean
μ is the hypothesized population mean under H0
S is the sample standard deviation
n is the sample size
A smaller t-statistic value indicates stronger evidence against H0 and in favor of Ha.
calculate the t-statistic for each sample result
A) X= 28, S = 6, n = 36
t = (28 - 30) / (6 / √(36)) = -2 / (6/6) = -2
B) X= 27, S = 4, n = 36
t = (27 - 30) / (4 / √(36)) = -3 / (4/6) = -4.5
C) X = 32, S = 2, n = 36
t = (32 - 30) / (2 / √(36)) = 2 / (2/6) = 6
D) X = 26, S = 9, n = 36
t = (26 - 30) / (9 / √(36)) = -4 / (9/6) = -8/3 ≈ -2.67
Comparing the t-statistics, that option B) with t = -4.5 gives the strongest evidence against H0. A more negative t-value indicates a larger deviation from the hypothesized mean of 30, which supports the alternative hypothesis that the true mean is less than 30.
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determine whether the series converges or diverges. [infinity] ∑ (n^2 + n + 4) / (n^4 + n^2)
n=1
The original series has terms (1 + 1/n + 4/n²) / (n² + 1) that are smaller than the terms of the convergent p-series (1/n²) for large n, by the Comparison Test, the original series also converges.
To determine whether the series converges or diverges, we can use the Comparison Test. The series in question is:
∑[(n² + n + 4) / (n⁴ + n²)], from n = 1 to infinity.
First, let's simplify the expression by dividing both the numerator and denominator by n²:
(n² + n + 4) / (n⁴ + n²) = (1 + 1/n + 4/n²) / (n² + 1).
Now, we'll compare this series with another series:
∑(1/n²), from n = 1 to infinity.
This is a p-series with p = 2, which is greater than 1, meaning it converges.
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solve x in this equation 2x+8x=10x
Answer:
All real numbers
Step-by-step explanation:
2x+8x=10x
10x = 10x
Determine the gradient of the straight line 2x-3y+9=0. Find the equation of the straight line through the origin which is perpendicular to the line 2x-3y+9=0.
Answer: 3
x
−
2
y
−
15
=
0
Explanation:
We know that,
the slope of the line
a
x
+
b
y
+
c
=
0
is
m
=
−
a
b
∴
The slope of the line
2
x
+
3
y
=
9
is
m
1
=
−
2
3
∴
The slope of the line perpendicular to
2
x
+
3
y
=
9
is
m
2
=
−
1
m
1
=
−
1
−
2
3
=
3
2
.
Hence,the equn.of line passing through
(
3
,
−
3
)
and
m
2
=
3
2
is
y
−
(
−
3
)
=
3
2
(
x
−
3
)
y
+
3
=
3
2
(
x
−
3
)
⇒
2
y
+
6
=
3
x
−
9
⇒
3
x
−
2
y
−
15
=
0
Note:
The equn.of line passing through
A
(
x
1
,
y
1
)
and
with slope
m
is
y
−
y
1
=
m
(
x
−
x
1
)3
x
−
2
y
−
15
=
0
Explanation:
We know that,
the slope of the line
a
x
+
b
y
+
c
=
0
is
m
=
−
a
b
∴
The slope of the line
2
x
+
3
y
=
9
is
m
1
=
−
2
3
∴
The slope of the line perpendicular to
2
x
+
3
y
=
9
is
m
2
=
−
1
m
1
=
−
1
−
2
3
=
3
2
.
Hence,the equn.of line passing through
(
3
,
−
3
)
and
m
2
=
3
2
is
y
−
(
−
3
)
=
3
2
(
x
−
3
)
y
+
3
=
3
2
(
x
−
3
)
⇒
2
y
+
6
=
3
x
−
9
⇒
3
x
−
2
y
−
15
=
0
Note:
The equn.of line passing through
A
(
x
1
,
y
1
)
and
with slope
m
is
y
−
y
1
=
m
(
x
−
Explanation:
the equation of a line in
slope-intercept form
is.
∙
x
y
=
m
x
+
b
where m is the slope and b the y-intercept
rearrange
2
x
+
3
y
=
9
into this form
⇒
3
y
=
−
2
x
+
9
⇒
y
=
−
2
3
x
+
3
←
in slope-intercept form
with slope m
=
−
2
3
Given a line with slope then the slope of a line
perpendicular to it is
∙
x
m
perpendicular
=
−
1
m
⇒
m
perpendicular
=
−
1
−
2
3
=
3
2
⇒
y
=
3
2
x
+
b
←
is the partial equation
to find b substitute
(
3
,
−
3
)
into the partial equation
−
3
=
9
2
+
b
⇒
b
=
−
6
2
−
9
2
=
−
15
2
⇒
y
=
3
2
x
−
15
2
←
equation of perpendicular lineExplanation:
the equation of a line in
slope-intercept form
is.
∙
x
y
=
m
x
+
b
where m is the slope and b the y-intercept
rearrange
2
x
+
3
y
=
9
into this form
⇒
3
y
=
−
2
x
+
9
⇒
y
=
−
2
3
x
+
3
←
in slope-intercept form
with slope m
=
−
2
3
Given a line with slope then the slope of a line
perpendicular to it is
∙
x
m
perpendicular
=
−
1
m
⇒
m
perpendicular
=
−
1
−
2
3
=
3
2
⇒
y
=
3
2
x
+
b
←
is the partial equation
to find b substitute
(
3
,
−
3
)
into the partial equation
−
3
=
9
2
+
b
⇒
b
=
−
6
2
−
9
2
=
−
15
2
⇒
y
=
3
2
x
−
15
2
←
equation of perpendicular line
Answer:
see explanation
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Given
2x - 3y + 9 = 0 ( subtract 2x + 9 from both sides )
- 3y = - 2x - 9 ( divide terms by - 3 )
y = \(\frac{2}{3}\) x + 3 ← in slope- intercept form
with slope m = \(\frac{2}{3}\)
Given a line with slope m then the slope of a line perpendicular to it is
\(m_{perpendicular}\) = - \(\frac{1}{m}\) = - \(\frac{1}{\frac{2}{3} }\) = - \(\frac{3}{2}\)
Since the equation passes through the origin then y- intercept is zero , that is c = 0
y = - \(\frac{3}{2}\) x ← equation of perpendicular line
Problems in Projection of Points: (Practice Questions) 1. Draw the projection of the following points. a) Point P, is 40 mm above HP and 55 mm in front of VP. (First Quadrant) b) Point Q, is 30 mm above HP and 45 mm behind VP. (Second Quadrant) c) Point R, is 35 mm below HP and 40 mm behind VP. (Third Quadrant) d) Point S, is 50 mm below HP and 30 mm in front of VP. (Fourth Quadrant) e) Point A, is 35 mm in front of VP. (lying on HP) f) Point B, is 30 mm behind VP. (Lying on HP) g) Point C, is 40 mm above HP. (Lying on VP) h) Point D, is 45 mm below HP. (Lying on VP) i) Point E, is on both HP and VP.(Lying on Reference Line XY)
The point where the horizontal and vertical lines intersect represents the projection of Point E.
To draw the projection of the given points, we need to use the principles of orthographic projection. Here's how the projections of each point would look like:
a) Point P: 40 mm above HP and 55 mm in front of VP (First Quadrant)
- Draw a horizontal line representing HP.
- From a point on HP, draw a vertical line upward representing the height above HP (40 mm).
- From the endpoint of the vertical line, draw a line parallel to XY representing the distance in front of VP (55 mm).
- The point of intersection of the parallel line with the vertical line represents the projection of Point P.
b) Point Q: 30 mm above HP and 45 mm behind VP (Second Quadrant)
- Draw a horizontal line representing HP.
- From a point on HP, draw a vertical line upward representing the height above HP (30 mm).
- From the endpoint of the vertical line, draw a line parallel to XY in the opposite direction representing the distance behind VP (45 mm).
- The point of intersection of the parallel line with the vertical line represents the projection of Point Q.
c) Point R: 35 mm below HP and 40 mm behind VP (Third Quadrant)
- Draw a horizontal line representing HP.
- From a point on HP, draw a vertical line downward representing the height below HP (35 mm).
- From the endpoint of the vertical line, draw a line parallel to XY in the opposite direction representing the distance behind VP (40 mm).
- The point of intersection of the parallel line with the vertical line represents the projection of Point R.
d) Point S: 50 mm below HP and 30 mm in front of VP (Fourth Quadrant)
- Draw a horizontal line representing HP.
- From a point on HP, draw a vertical line downward representing the height below HP (50 mm).
- From the endpoint of the vertical line, draw a line parallel to XY representing the distance in front of VP (30 mm).
- The point of intersection of the parallel line with the vertical line represents the projection of Point S.
e) Point A: 35 mm in front of VP (lying on HP)
- Draw a horizontal line representing HP.
- From a point on HP, draw a vertical line upward and downward representing the same height above and below HP (35 mm).
- The point where the vertical lines intersect HP represents the projection of Point A.
f) Point B: 30 mm behind VP (lying on HP)
- Draw a horizontal line representing HP.
- From a point on HP, draw a vertical line upward and downward representing the same height above and below HP.
- The point where the vertical lines intersect HP represents the projection of Point B.
- Since Point B is behind VP, the projection will not be visible.
g) Point C: 40 mm above HP (lying on VP)
- Draw a vertical line representing VP.
- From a point on VP, draw a horizontal line to the right representing the distance to the right of VP (40 mm).
- The point of intersection of the horizontal line with VP represents the projection of Point C.
h) Point D: 45 mm below HP (lying on VP)
- Draw a vertical line representing VP.
- From a point on VP, draw a horizontal line to the right representing the distance to the right of VP (45 mm).
- The point of intersection of the horizontal line with VP represents the projection of Point D.
i) Point E: On both HP and VP (lying on Reference Line XY)
- Draw a horizontal line representing HP.
- Draw a vertical line representing VP.
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What is the probability that a randomly chosen young adult has at least a high school education? which rule of probability did you use to find the answer?
The probability that a randomly chosen young adult has at least a high school education can be found using the rule of probability called the "complement rule".
To find the answer, we need to subtract the probability that a randomly chosen young adult does not have at least a high school education from 1. In other words:
Probability of having at least a high school education = 1 - Probability of not having at least a high school education.
By using this rule, we can calculate the probability.
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PLS HURRY!!!
Natalie gathered a random sample of favorite writing utensils of the students in her class. She calculated data on different variables. For one data that she collected, she constructed a bar graph. Which of the following variables did she use?
O Price of writing utensil
O Type of writing utensil
O The volume of each writing utensil
O Weight of each writing utensil
Natalie used for constructing the bar graph is type of writing utensil.
What is bar graph ?The representation of numerical data using rectangles (or bars) of equal width and varying height is known as a bar graph.
Depending on the distribution and nature of the data, various types of charts or graphs, such as scatter plots, histograms, or box plots, would typically be used to represent the mentioned quantitative variables, such as the price, volume, and weight of each writing utensil.
Natalie probably used the variable "type of writing utensil" for the bar graph based on the information provided. This is due to the fact that a bar graph is a type of chart that uses rectangular bars to represent categorical data. Each bar represents a distinct category or group.
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Mason is a beast on the basketball court. He has 15 games left. How many more games do you expect him to score 13-15 points
Using the binomial distribution, considering that he scores between 13 and 15 points in 60% of his games, he is expected to score 13-15 points in 9 games out of the remaining 15.
For each game, there are only two possible outcomes, either he scores between 13 and 15 points or he does not. His score on a single game is independent of any other game, hence the binomial distribution is used to solve this question.
What is the binomial probability distribution?It is the probability of exactly x successes on n repeated trials, with p probability of a success on each trial.
The expected value of the binomial distribution is:
\(E(X) = np\)
In this problem:
There are 15 games, hence n = 15.He scores between 13 and 15 points in 60% of his games, hence p = 0.6.Then:
E(X) = np = 15 x 0.6 = 9.
He is expected to score 13-15 points in 9 games out of the remaining 15.
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Which is a constant function?
f(x) = |x-81
f(x) = 5x
f(x) = 3x
f(x) = -1
Answer:
last one is the constant function
For any linear phase filter, prove that if zo is a zero, then so must zo¹ be
We have shown that if zo is a zero of a linear phase filter, then zo¹ = zo + Δz is also a zero. This holds true because the linear phase property ensures that the filter's phase response varies linearly with frequency, and hence, any frequency offset from zo will yield a corresponding zero in the transfer function.
For a linear phase filter, the phase response is linearly proportional to the frequency. Let's consider a linear phase filter with a zero at frequency zo. The transfer function of the filter can be expressed as H(z) = A(z - zo), where A is a constant and z represents the complex frequency variable.
To find the zero at zo¹, we need to analyze the filter's transfer function at a frequency offset from zo. Let's substitute z with (z - Δz) in the transfer function, where Δz represents a small frequency offset. The new transfer function becomes H(z - Δz) = A((z - Δz) - zo).
Now, let's evaluate the new transfer function at the frequency zo¹ = zo + Δz. Substituting zo¹ into the transfer function, we have H(zo¹ - Δz) = A((zo¹ - Δz) - zo).
Expanding the equation, we get H(zo¹ - Δz) = A(zo¹ - Δz - zo) = A(zo - zo + Δz - Δz) = A(0) = 0.
Therefore, we have shown that if zo is a zero of a linear phase filter, then zo¹ = zo + Δz is also a zero. This holds true because the linear phase property ensures that the filter's phase response varies linearly with frequency, and hence, any frequency offset from zo will yield a corresponding zero in the transfer function.
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4. Ron purchased a 10-year GIC for $3000. The GIC earns 5.6% interest, compounded annually.
a) What will be the future value of the GIC at maturity?
b) Estimate how long it will take for the GIC to be worth at least $12 000.
c) Predict what would happen to the future value of the GIC in each situation below. Explain your prediction, and then verify it.
i) The compounding frequency is monthly.
ii) The interest rate is 2.8%, compounded semi-annually.
d) What minimum interest rate, with daily compounding, would be needed to have a future value that is $100 greater than the future value you determined in part a)?
Answer:
a) To calculate the future value of the GIC at maturity, we can use the formula:
FV = P(1 + r/n)^(n*t)
where:
P = principal amount = $3000
r = annual interest rate = 5.6% = 0.056
n = number of times interest is compounded per year = 1 (annually)
t = number of years = 10
Plugging in the values, we get:
FV = $3000(1 + 0.056/1)^(1*10)
= $3000(1.056)^10
= $5,020.93
Therefore, the future value of the GIC at maturity is $5,020.93.
b) To estimate how long it will take for the GIC to be worth at least $12,000, we can use the same formula as above and solve for t:
FV = $12,000
P = $3000
r = 0.056
n = 1
$12,000 = $3000(1 + 0.056/1)^(1*t)
4 = 1.056^t
t = log(4) / log(1.056)
t ≈ 25.58
Therefore, it will take approximately 25.58 years for the GIC to be worth at least $12,000.
i) If the compounding frequency is monthly, then n = 12 and the formula becomes:
FV = $3000(1 + 0.056/12)^(12*10)
= $5,124.82
The future value of the GIC will be slightly higher because compounding is occurring more frequently.
ii) If the interest rate is 2.8%, compounded semi-annually, then r = 0.028/2 = 0.014 and n = 2. Plugging in the values, we get:
FV = $3000(1 + 0.014/2)^(2*10)
= $4,012.92
The future value of the GIC will be lower because the interest rate is lower and compounding is occurring less frequently.
d) To find the minimum interest rate with daily compounding that would be needed to have a future value that is $100 greater than the future value in part a, we can use the formula:
FV = P(1 + r/n)^(n*t)
where:
FV = $5,120.93
P = $3000
n = 365 (number of times interest is compounded per year with daily compounding)
t = 10
We can solve for r as follows:
$5,120.93 = $3000(1 + r/365)^(365*10)
1.707 = (1 + r/365)^3650
log(1.707) = log(1 + r/365)*3650
log(1.707)/3650 = log(1 + r/365)
0.000108166 = r/365
r = 0.0395
Therefore, the minimum interest rate with daily compounding that would be needed to have a future value that is $100 greater than the future value in part a is 3.95%
Find the volume of the sphere.
Either enter an exact answer in terms of \piπpi or use \dfrac{22}{7}
7
22
start fraction, 22, divided by, 7, end fraction for \piπpi.
The volume of sphere is 1437.33 if the given radius is 7 .
What is Surface area of sphere ?
Surface area of sphere can be defined as the product of four , pi and square of radius. And here the value of pi could be 3.14 or 22/7 .
Given ,
Volume of a sphere = 4/3πr³
π = 22/7
r = 7
Volume of a sphere = 4/3πr³
= 4/3 * 22/7 * 7³
= 4/3 * 22/7 * 7 * 7 * 7
= (4 * 22 * 7 * 7 * 7) / (3 * 7)
= 30,184/21
= 1437.3333333333
Volume of a sphere = 1,437.33
Therefore, the volume of sphere is 1437.33 if the given radius is 7 .
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Sales Tax
A video game system cost $130 and the sales tax is
6.5%. What is the total cost of the video game system?
Answer:
138.45
Step-by-step explanation:
130×6.5%=8.45
130+8.45=138.45
1. The accuracy of a pool thermometer is the positive difference between the temperature
reading on the thermometer t and the actual temperature of the pool p. Write two absolute
value expressions equivalent to the accuracy of a pool thermometer.
The two absolute value expressions equivalent to the accuracy of a pool thermometer are |t - p| and |p - t|
How to write absolute value expressions for the accuracy of the thermometer?Absolute value means to remove any negative sign in front of a number and to think of the number as positive. This is indicated by the vertical lines | |
Any expression that contain the vertical lines is called absolute
value expression
Since the accuracy of a pool thermometer is the positive difference between the temperature reading on the thermometer t and the actual temperature of the pool p.
We can write:
accuracy = | t - p|
OR
accuracy = | p - t|
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Answer:
It-pI
Step-by-step explanation:
an electric water heater consumes 5 kw for 2 hours per day. what is the cost of running it for one month (30 days) if electricity costs 12 cents/kw.h?
The cost of running the electric water heater for one month (30 days) would be $36, assuming the electricity costs 12 cents per kilowatt-hour.
To calculate the cost of running the electric water heater for one month, we need to determine the total energy consumption and multiply it by the cost per kilowatt-hour.
The water heater consumes 5 kW for 2 hours per day, so the daily energy consumption can be calculated as follows:
Daily energy consumption = Power (kW) × Time (hours) = 5 kW × 2 hours = 10 kWh
Next, we calculate the total energy consumption for one month (30 days):
Total energy consumption = Daily energy consumption × Number of days = 10 kWh/day × 30 days = 300 kWh
Finally, we multiply the total energy consumption by the cost per kilowatt-hour (12 cents/kWh) to find the cost of running the water heater for one month:
Cost = Total energy consumption × Cost per kilowatt-hour = 300 kWh × $0.12/kWh = $36
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suppose that b is a 5 cross times 5 matrix with three eigenvalues. one eigenvalue has a three dimensional eigenspace. which of the following statements are correct?
There are two correct statements regarding a 5 by 5 matrix with three eigenvalues, one of which has a three-dimensional eigenspace.
First, there must be at least two linearly independent eigenvectors associated with the eigenvalue that has a three-dimensional eigenspace. Second, the sum of the dimensions of the eigenspaces must be equal to the size of the matrix, which is 5 in this case.
To understand the first statement, recall that the dimension of an eigenspace is equal to the multiplicity of the associated eigenvalue, which is the number of times it appears as a root of the characteristic equation. Since one of the eigenvalues has a three-dimensional eigenspace, its multiplicity must be at least 3. This means there are at least 3 linearly independent eigenvectors associated with this eigenvalue, which is necessary to span a three-dimensional space. However, the sum of the multiplicities of all eigenvalues cannot exceed the size of the matrix, which is 5. Therefore, the remaining two eigenvalues must have a combined multiplicity of 2 at most, which implies that there are at most 2 linearly independent eigenvectors associated with each of them.
To understand the second statement, note that the sum of the dimensions of the eigenspaces is equal to the sum of the multiplicities of all eigenvalues. This follows from the fact that the eigenspaces associated with distinct eigenvalues are linearly independent. Since there are three distinct eigenvalues in this case, the sum of their multiplicities is at most 5, which means the sum of the dimensions of their eigenspaces is also at most 5. Since one of the eigenspaces has dimension 3, the sum of the dimensions of the other two eigenspaces must be at least 2, which means each of them has at least one linearly independent eigenvector.
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Select the statement that best justifies the conclusion based on the given information. If x+5=15, then x=10
Answer:
The answer to your problem is, subtraction property of equality
Step-by-step explanation:
Given information, If x + 5 = 15
By subtraction property of equality:
Subtract 5 from both sides we have;
then; x = 10
Thus the answer to your problem is, subtraction property of equality
Can someone help me understand this pls? (Provide an explanation)
Question:
Is triangle AFD congruent to triangle BEC?
Answer: is not congruent
To be congruent, it has to be same size and shape. It can face in any directions. Both the shapes have to be equal in all side lengths and equal angles.
Looking at the triangle you can understand that it is not congruent as the triangles have a size difference of being big and small. But if you still desire detailed explanation then here:
There is four rules for a triangle to be congruent. If one of these rule matches then you can say the triangle is congruent.
1. The three sides are equal
2. Two angles are the same and a corresponding side is the same
3. Two sides are equal and the angle between the two sides is equal
4. Two angles are equal and the side between them is equal
There are no angles, so find if all the three sides are equal. Even if one side is not equal, you can say it is not congruent. So if you just measure any side length of the smaller and big triangle, the length is not equal. None of the side lengths in either of the triangle is equal.
This is the last question on my DBA! Please help!!
What are the key features of the graph's exponential functions? Explain how you find each key
feature and what happens to the graphs if you were to add or subtract a constant term.
If the number of tomato growers in the market increases, the supply:
A) of tomatoes increases.
B) of tomatoes decreases.
C) tomatoes remains constant.
D) curve for tomatoes shifts to the left.
If the number of tomato growers in the market increases, it would generally lead to an increase in the supply of tomatoes increases.
The correct answer is A.
This is because an increase in the number of growers means that there are more producers entering the market, resulting in a greater quantity of tomatoes available for sale. As a result, the overall supply of tomatoes would increase.In terms of the supply curve, an increase in the number of growers would cause the supply curve for tomatoes to shift to the right. This signifies that at any given price, there would be a larger quantity of tomatoes supplied in the market. Consequently, consumers would have access to a greater supply of tomatoes, potentially leading to lower prices due to the increased competition among the growers. Thus, supply of tomatoes increases accurately reflects the likely outcome when the number of tomato growers increases.The correct answer is A.
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Which figures have rotation symmetry?
Select each correct answer
Answer:
The both on the right are the correct answers
Step-by-step explanation:
This is because rotational symmetry is defined as the property a shape has when it looks the same after some rotation by partial turns.
Elway Electronics has debt with a market value of $350,000, preferred stock with a market value of $150,000, and common stock with a market value of $450,000. If debt has a cost of 8%, preferred stock a cost of 10%, common stock a cost of 12%, and the firm has a tax rate of 30%, what is the WACC? 8. 64% 9. 12% 9. 33% 9. 46%
Converting the WACC to a percentage, we get 8.3%. Therefore, the correct answer is not provided in the options given.
To calculate the weighted average cost of capital (WACC), we need to determine the weight of each component (debt, preferred stock, and common stock) and multiply it by its respective cost.
First, we calculate the weights of each component. The weight of debt is its market value divided by the total market value of the firm: $350,000 / ($350,000 + $150,000 + $450,000) = 0.5.
Similarly, the weight of preferred stock is $150,000 / ($350,000 + $150,000 + $450,000) = 0.25, and the weight of common stock is $450,000 / ($350,000 + $150,000 + $450,000) = 0.25.
Next, we multiply the weight of each component by its respective cost and sum the results.
The cost of debt is 8% multiplied by (1 - tax rate of 30%), which is 0.08 * (1 - 0.30) = 0.056. The cost of preferred stock is 10%, and the cost of common stock is 12%.
Now we can calculate the WACC using the formula: WACC = (weight of debt * cost of debt) + (weight of preferred stock * cost of preferred stock) + (weight of common stock * cost of common stock).
Plugging in the values, we have: WACC = (0.5 * 0.056) + (0.25 * 0.10) + (0.25 * 0.12) = 0.028 + 0.025 + 0.03 = 0.083.
Converting the WACC to a percentage, we get 8.3%. Therefore, the correct answer is not provided in the options given.
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The process by which information is encoded, stored, and later retrieved is called
a. intellect b. cognition c. memory d. perception
Answer:
Memory is the process(cognitive) in which information is encoded,stored and retrieved.
A cleaning crew always uses a 10% disinfectant solution on very delicate surfaces. But today the crew only has a 50% disinfection solution. If the crew needs 25 liters of 10% solution how many liters of water and how many liters of the 50% disinfectant should they mix?
Answer: 50 percent solution because you will have to multiply the 10 percent by 5.
Step-by-step explanation: