Answer:
1. 80 students
2. 45 students
3. i believe that its 25 dollars
4. i dont know sorry
5. i dont know sorry
Step-by-step explanation:
A river flows over a dam at a constant rate. In 1 second, 49 m(mini 3 not big) of water flows over the dam. Let x represent time in seconds and y represent water volume in cubic meters. This situation is graphed below. Which equation represents this water flow over time?
Question 6 options:
.A Y=-49x
.B Y=49x
.C Y= 1/49x
.D Y= - 1/49x
Use the Midpoint Rule with \(n=5\) to estimate the volume obtained by rotating about the y-axis the region under the curve \(y=\sqrt{1+x^3}\), \(0\leq x\leq 1\).
To estimate the volume using the Midpoint Rule with \(\displaystyle n=5\), we need to divide the interval \(\displaystyle 0\leq x\leq 1\) into \(\displaystyle n\) subintervals of equal width. Since \(\displaystyle n=5\), each subinterval will have a width of \(\displaystyle \Delta x=\frac{1-0}{5}=\frac{1}{5}\).
Now, let's calculate the volume using the Midpoint Rule. The formula for the volume obtained by rotating about the y-axis is:
\(\displaystyle V\approx 2\pi \sum _{i=1}^{n}y_{i}\Delta x\)
where \(\displaystyle y_{i}\) represents the value of the function \(\displaystyle y=\sqrt{1+x^{3}}\) evaluated at the midpoint of each subinterval.
First, let's find the midpoints of the subintervals. Since the width of each subinterval is \(\displaystyle \Delta x=\frac{1}{5}\), the midpoint of the \(\displaystyle i\)-th subinterval is given by:
\(\displaystyle x_{i}=\frac{\Delta x}{2}+\left( i-\frac{1}{2}\right) \Delta x=\frac{1}{10}+\left( i-\frac{1}{2}\right) \frac{1}{5}\)
Substituting \(\displaystyle x_{i}\) into the function \(\displaystyle y=\sqrt{1+x^{3}}\), we obtain:
\(\displaystyle y_{i}=\sqrt{1+\left( \frac{1}{10}+\left( i-\frac{1}{2}\right) \frac{1}{5}\right) ^{3}}\)
Now, we can calculate the approximate volume using the Midpoint Rule:
\(\displaystyle V\approx 2\pi \sum _{i=1}^{5}y_{i}\Delta x\)
Substituting the values of \(\displaystyle y_{i}\) and \(\displaystyle \Delta x\) into the formula, we can evaluate the sum and compute the estimated volume.
\(\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}\)
♥️ \(\large{\underline{\textcolor{red}{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)
(a) Simplify x² − (x − m)(x + m). (b) Using your answer to (a), write down the value of 1023² - 1022 x 1024 without using a calculator.
Answer:
Step-by-step explanation:
Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?
Use the spinner to find the theoretical probability of the event.
The theoretical probability of spinning a 1 is
Answer:
3/8
Step-by-step explanation:
There are 8 options, are 3 of them are ones. This means there is a 3 in 8, or 3/8 chance of spinning a one.
Choose the three equivalent forms of 4.625.
four and five eighths, 462.5%, thirty seven eighths
four and six twenty fifths, 4.625%, thirty seven eighths
four and five eighths, 4.625%, forty five eighths
four and six twenty fifths, 462.5%, forty five eighths
Answer:
Step-by-step explanation:
4.625%- percents and decimals are the same
four and five eighths- five divided by eight is (.625) and 4+ (.625) is 4.625
thirty seven eighths- 37 divided by 8 is 4.625
-What is the y-intercept of the line of best fit?
-What is the slope of the line of best fit for this scatter plot?
-What is the equation of the line of best fit?
Answer:
y-intercept : 8
slope: -1/2
equation: \(y = -\dfrac{1}{2}x + 8\)
Step-by-step explanation:
The y-intercept is where the line crosses the y axis and you can see it crosses at y = 8 (when x =0)
Slope of the line can be found by the formula (y2-y1) / (x2-x1) where 9x1, y1) and (x2, y2) are two points on the line
Let's take the points (0, 8) and (10, 3) the two extreme points on the line
Slope = (3 - 8) / (10 - 0) = -5 / 10 = - 1/2
Equation of a line in slope intercept form is
y = mx + c
where m is the slope
b is the y intercept
The equation of the line is therefore
\(y = -\dfrac{1}{2}x + 8\)
Answer:
Y-intercept = 8
Slope = -1/2t
Equation = y =-1/2x+8
Step-by-step explanation:
When x = 0, y = y-intercept.
Therefore, the y-intercept is 8.
We can find the slope using the formula y2-y1 / x2-x1 = m.
Let's use the points (0,8) and (4,6)
6-8 / 4-0 = m;
m = - 1/2.
Given that the generic formula is y=mx+b, and m-slop and b=y-intercept, we have:
y = -1/2x+8.
Find the value of x. Give reasons to justify your solution.
Answer:
Answer attached
Step-by-step explanation:
steps and answer in attachment
Which of the following actions would a person need to avoid when caught outside during a thunderstorm in order to minimize the risk of being hurt by lightning?
using a plastic umbrella
walking on wet land
hiding in closed areas
taking cover in low structures
Answer:
Which of the following actions would a person need to avoid when caught outside during a thunderstorm in order to minimize the risk of being hurt by lightning?
using a plastic umbrella
walking on wet land
hiding in closed areas
taking cover in low structures
Step-by-step explanation:
wallking on wet land / B
The person should avoid walking on wet land. Option B) is correct
Thunderstorm, is unstable whether of rain season mostly inwhich lightning or string of current emerges.
While walking in thunderstorm person must keep precaution
and stay away from the wet land cause chances of lightning on wet land is the most
Thus the person should avoid walking on the wet land.
Learn more about thunderstorm here:
https://brainly.com/question/12712011
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Triangle NGM is reflected across the x-axis, and is dilated by a factor of
\(2 \frac{1}{2} \)
what are the coordinates of vertices N'G'M'
The coordinates of vertices N'G'M' are N'(-10, -15), M'(-15, -5) and G'(-5, -10).
From the given graph, N(-4, 6), M(-6, 2) and G(-2, 4).
Scale factor = \(2\frac{1}{2}\)
= 2.5
The reflection of point (x, y) across the x-axis is (x, -y).
Here, N(-4, 6)→(-4, -6)
M(-6, 2)→(-6, -2)
G(-2, 4)→(-2, -4)
Now, with scale factor 2.5, we get
(-4, -6)→2.5(-4, -6)→N'(-10, -15)
(-6, -2)→2.5(-6, -2)→M'(-15, -5)
(-2, -4)→2.5(-2, -4)→G'(-5, -10)
Therefore, the coordinates of vertices N'G'M' are N'(-10, -15), M'(-15, -5) and G'(-5, -10).
To learn more about the reflection over x-axis visit:
https://brainly.com/question/15175017.
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Answer first and I will mark brainliest
Answer:
A 6660 it decreases by 820 so 8,300-820=7480 and then 7480-820=6660
$6,660
Answer: The cost after 7 years should be $5740.
Step-by-step explanation:
If you find the ammoun that the value decreases each year, and multiply that by your 7 years you get your answer.
HELP ASAP! GIVING BRAINLIEST!
Robin helped her mom set a banquet table for dinner. She noticed that the width of the table was a third of its length. If the width is 6 feet, write and solve an equation to determine its length.
L over 3 equals 6; L = 18 feet
3L = 6; L = 2 feet
3 + L = 6; L = 3 feet
L − 3 = 6; L = 9 feet
Answer :answer is L over 3 equals 6; L = 18 feet
help me pls!!!!!!!!!
Answer: The answer should be C (72).
You have a pizza with diameter 12
2
3 in., and a square box that is 12.65 in. across. Write 12
2
3 as a decimal. Can you fit the pizza inside the box?
What is the decimal expansion for 12
2
3?
A.12.6
B.12.65
C.12.6
D.12.66
pls help me
Answer:
D is the right choice and no you cannot fit the pizza inside the box.
Step-by-step explanation:
D is the answer because to turn 2/3 into a decimal you would divide 2 by 3 and the answer you would get would be 0.66666666666...You would then add 12 to the answer and get 12.6666... Once you get this answer you would round it to the hundredths to get 12.67 but since that is not an option you could use D, 12.66 inches.
Answer:
I believe the answer is D.
Step-by-step explanation:
Which of the following is the solution to the inequality below? 5x - 6 \(\leq\) 14
A) x \(\leq\) - 4/5
B) x \(\geq\) 4
C) x \(\geq\) - 4/5
D) x \(\leq\) 4
Answer:
D. x \(\leq\) 4
Step-by-step explanation:
1. You add 6 to each side
2. Divide each side by 5 to isolate x
Answer:
answer is A.
Step-by-step explanation:
-5x-10 <20
Group like terms
-5x < 20 + 10
-5x < 30
Divide both sides by -5
Anybody know this?
To evaluate an expression with variables:
1. Substitute the values for the variables.
2. Identify grouping symbols, beginning with the innermost symbols.
3. Determine and apply the rules of exponents to simplify.
4. Evaluate.
Evaluate the expression using x = –1 and y=3.
(6x4y3)
What is the value of the expression?
(A) –162
(B)–54
(C) 162
(D) 216
Answer:
162
Step-by-step explanation:
Answer: c:162
Step-by-step explanation: hope i helped
I dont know what answer is i need help
Answer:
9^-5/9^-7=81
Step-by-step explanation:
I need help with this math homework pls
To practice for a competition, Christian swam 520 meters in the pool each day for 2 weeks. How many kilometers did Christian swim in those 2 weeks?
1 m = 0.001 km
Answer: 7.28 km
Step-by-step explanation: so first we need to figure out the amount of meter he swam. 2 weeks is 14 days. 14 ✕ 520 = 7280
Then we figure out the km. 7280 converts to km is 7.28 km
For each pair of points, think about the line that joins them.
For which pair(s) is the line parallel to the x-axis?
Select all correct answers.
Answer:
fd
Step-by-step explanation:
spañol
Answer:
The answer might be number b
What is the constant rate of change between the two quantities in the table?
Which length is equivalent to 12 yards?
A. 4 ft.
B. 9 ft.
C. 15 ft.
D. 36 ft.
ThxΤΗΑΝΚ ΥΟΨ
Answer:
D
Step-by-step explanation:
there are 3 ft in a yard, so to find how many yards you multiply 3 time 12, which equals 36.
Answer:
D 36
Step-by-step explanation:
math
Based on the line plot shown below, which amount of cheese was ordered once?
A line plot titled
A.
1
pound
B.
1
1/4
pounds
C.
1/2
pound
D.
1
1/2
pounds
Answer:
Please provide an image of the line plot so your question can be answered.
Option (D) 1 1/2 pounds
I got this question once in a quiz.
I will give brainliest PLEASE HELP
Rihanna planned a rectangular courtyard for a park and made a scale drawing using inches as the unit of measurement. She originally planned for the length of the actual courtyard to be 54 feet, but she decided to change it to 72 feet. If the length of the courtyard is 18 inches in her scale drawing, which statement about the change of scale is true?
One inch represented 1 foot in the first scale, but now 1 inch represents 4 feet in the second scale.
One inch represented 4 feet in the first scale, but now 1 inch represents 3 feet in the second scale.
One inch represented 54 feet in the first scale, but now 1 inch represents 72 feet in the second scale.
One inch represented 3 feet in the first scale, but now 1 inch now represents 4 feet in the second scale.
Answer:
scale 1-1in=3ft
scale 2-1in=4ft
Answer:
Step-by-step explanation:
I feel like its C
At which values of x does the function F(x) have a vertical asymptote? Check
all that apply,
F(x)
9
(x - 1)(x-8)
Answer:
The values of x that makes f(x) have a valid asymptote are 1 and 8
Step-by-step explanation:
Given
\(f(x) = \frac{9}{(x-1)(x-8)}\)
Required
At what value does f(x) has a vertical asymptote
To solve this, we simply equate the denominator of f(x) to 0;
This is done as follows
\({(x-1)(x-8)} = 0\)
This can be split to
\({(x-1) = 0 \ or\ (x-8)} = 0\)
Remove brackets
\(x-1 = 0 \ or\ x-8 = 0\)
Make x the subject of formula in both cases
\(x-1+1 = 0+1 \ or\ x-8+8 = 0+8\)
\(x= 0+1 \ or\ x = 0+8\)
\(x= 1 \ or\ x = 8\)
The values of x that makes f(x) have a valid asymptote are 1 and 8
Answer:
The correct answer is 1 and 8
Step-by-step explanation:
Find each probability.
Answer:
5,9
Step-by-step explanation:
I think row A would be 5 and B would be 9 im sorry if im wrong
Which of the following represents a positive integer?
9º below zero
A deposit of $50
A weight loss of 10 pounds
Answer: A deposit of 50$
Step-by-step explanation:
First, 9 Degrees below 0. 0-9 is -9 so this is a negative integer.
Second, deposit of 50$ so pretend your bank amount is x so x+ 50$ would be x + 50! Which is a positive integer
Finally, A weight loss of 10 pounds, x- 10 is probably a negative integer.
Hope this helps!
4.5 multiplied by x = 81. what represents x?
At a dinner, a meal costs $22 and a sales tax of $1.87 was added to the bill.
1. How much would the sales tax be on a $66 meal?
2. What is the sales tax rate in this city?
Answer:
$8.50, the rate is 9.65%
Step-by-step explanation:
-3 + 6x. Which expression shows the correct factorization?
Here are the ones to pick from
1. -2 + -2 +6 +x
2. 6(-2 +x)
3. 6(-2 +x)
4. -3 (1 - 2x)
Answer:
Option #4
Step-by-step explanation:
Expand option #4
=-3(1-2x)
=-3 -2x*-3
=-3+6x which is what your original equation was.