Answer: Undefined, or 0
Step-by-step explanation:
We will use the formula for slope. Let (-8, 6) be point 1 and (-8, 2) be point 2.
\(\displaystyle \frac{y_{2} -y_{1} }{x_{2} -x_{1} }\)
\(\displaystyle \frac{2-6 }{-8--8}\)
\(\displaystyle \frac{2-6 }{-8+8}\)
\(\displaystyle \frac{-4 }{0}\)
You cannot divide by 0. This means the line is straight up/down, or vertical, and has an undefined slope.
what is 4.6 times 8888888888 divided by x when x is 869
Answer:
47052806.5418
Step-by-step explanation:
Honestly I just used a calculator...
Hope this helped tho
prove that the sum of the interior angles of a convex n-sided polygon is degrees. (you may assume that the sum of the interior angles of a triangle is )
To prove that the sum of the interior angles of a convex n-sided polygon is (n-2) times 180 degrees, we can use the fact that any polygon can be divided into n-2 triangles by drawing n-3 non-intersecting diagonals from any one vertex. Each triangle has interior angles that sum to 180 degrees, so the sum of the interior angles of the polygon is (n-3) times 180 degrees plus the sum of the interior angles of the last triangle. Since the last triangle is formed by connecting the two endpoints of the last diagonal with the vertex from which all the other diagonals were drawn, it has one angle that is the same as the vertex angle of the polygon (the angle between the two sides that the diagonal connects) and two angles that are supplementary to the angles adjacent to the vertex angle.
Therefore, the sum of the interior angles of the last triangle is equal to the vertex angle plus 180 degrees. Substituting this into the previous equation, we get:
sum of interior angles of polygon = (n-3) x 180 degrees + vertex angle + 180 degrees
Simplifying this expression, we get:
sum of interior angles of polygon = (n-2) x 180 degrees + vertex angle
Since the vertex angle of any convex polygon is the same for all vertices, we can say that the sum of the interior angles of a convex n-sided polygon is (n-2) times 180 degrees. Therefore, we have proved that the sum of the interior angles of a convex n-sided polygon is (n-2) times 180 degrees, assuming that the sum of the interior angles of a triangle is 180 degrees.
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For a certain bathtub, the hot water faucet can fill the tub in 15 minutes. the cold water faucet can fill the tub in 10 minutes. if both faucets are used together, how long will it take to fill the tub?
Answer:
It will take 6 minutes for the bathtub to be filled.
Step-by-step explanation:
\(\left[\begin{array}{ccccc}time&hot&cold&total&full\\1&2/30&3/30&5/30&under\\2&4/30&6/30&10/30&under\\3&6/30&9/30&15/30&under\\4&8/30&12/30&20/30&under\\5&10/30&15/30&25/30&under\\6&12/30&18/30&30/30&filled\\7&14/30&21/30&35/30&over\\8&16/30&24/30&40/30&over\\9&18/30&27/30&45/30&over\\10&20/30&30/30&50/30&over\end{array}\right]\)
Expand or condense the logarithmic expressions. (2 points each) 16. 2ln(a) + 5ln (b)- 7 ln(c) 15. log₂ (x¹y³√2)
The expanded form of the expression is ln(a²b⁵) - ln(c⁷).
To expand the expression 2ln(a) + 5ln(b) - 7ln(c), we can use the properties of logarithms. The property we'll use is the logarithm of a product, which states that ln(ab) = ln(a) + ln(b). Applying this property, we can rewrite the expression as:
2ln(a) + 5ln(b) - 7ln(c) = ln(a²) + ln(b⁵) - ln(c⁷)
Next, we can use another property of logarithms, the logarithm of a quotient, which states that ln(a/b) = ln(a) - ln(b). Using this property, we can further simplify the expression:
ln(a²) + ln(b⁵) - ln(c⁷) = ln(a²b⁵) - ln(c⁷)
Therefore, the expanded form of the expression is ln(a²b⁵) - ln(c⁷).
To expand the expression log₂(x¹y³√2), we can use the properties of logarithms. The first expression we'll use is the power rule, which states that logₐ(b^c) = clogₐ(b). Applying this property, we can rewrite the expression as:
log₂(x¹y³√2) = 1log₂(x) + 3log₂(y) + 1/2log₂(2)
Simplifying further, we have:
log₂(x) + 3log₂(y) + 1/2(1)
Therefore, the expanded form of the expression is log₂(x) + 3log₂(y) + 1/2
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you are a researcher studying the lifespan of a certain species of bacteria. a preliminary sample of 35 bacteria reveals a sample mean of hours with a standard deviation of hours. you would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.4 hours at a 99% level of confidence. what sample size should you gather to achieve a 0.4 hour margin of error? round your answer up to the nearest whole number.
The sample size required to achieve a margin of error of 0.4 hours with a 99% level of confidence is 621.
To achieve a margin of error of 0.4 hours with a 99% level of confidence, you need to gather a sample size of 621 bacteria. The formula to calculate the sample size is given by:
n = [(Zα/2)2 · σ2] / (E2)
where n is the sample size, Zα/2 is the z-score, σ is the population standard deviation, and E is the margin of error.
For the given example, Zα/2 = 2.576, σ = hours, and E = 0.4. Plugging these values in the formula, we get n = 621. Thus, the sample size required to achieve a margin of error of 0.4 hours with a 99% level of confidence is 621.
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the surface area of a cube is 150 cm2. follow each step to find the length of one side of the cube. there are faces on a cube. the area of one face of this cube is cm2. the length of one edge of this cube is cm.
The formula to calculate the volume of a rectangular prism is length × width × height.
What is the formula to calculate the volume of a rectangular prism?To find the length of one side of the cube, we can use the formula for the surface area of a cube.
Step 1: Determine the number of faces on a cube.
A cube has six faces.
Step 2: Calculate the area of one face of the cube.
The total surface area of the cube is given as 150 cm². Since there are six faces, the area of one face can be found by dividing the total surface area by the number of faces:
Area of one face = Total surface area / Number of faces
Area of one face = 150 cm² / 6 = 25 cm²
Step 3: Calculate the length of one edge of the cube.
The area of one face of the cube is equal to the length of one edge squared. Therefore, we can find the length of one edge by taking the square root of the area of one face:
Length of one edge = √(Area of one face)
Length of one edge = √(25 cm²) = 5 cm
Thus, the length of one side of the cube is 5 cm.
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Solve the following equations by using the Quadratic formula and answer the subsequent questions:
x^2 - 6x + 9 = 0
a. Are the roots equal or unequal?
b. Are the roots rational or irrational?
c. Are the roots real or non-real?
(Please explain how you got the answers)
Answer:
Step-by-step explanation:
Note that x^2 - 6x + 9 = 0 can be rewritten as the square of a binomial:
(x - 3)^2
and the roots are found by setting this equal to zero and solving for x:
(x - 3)^2 = 0, or x - 3 = ±0, or x = 3 and x = 3
a) there are two equal roots: {3, 3}
b) the roots {3, 3} are rational
c) the roots {3, 3) are real
If you want to use the quadratic formula, proceed as follows:
1. Identify the coefficients of the quadratic: {1, -6, 9}
2. Find the discriminant b^2 - 4ac: It is (-6)^2 - 4(1)(9) = 36 = 36 = 0
As a general rule, if the discriminant is zero, the quadratic has two equal, real roots. These roots are rational: 3 can be rewritten as 3/1, which is a ratio.
Find the ratio of the prize of pencil to that of ball pen , if pencils cost 25$ per score and ball pen cost 12$ per 10
Last time the question was wrong please help me in this
Answer:
Step-by-step explanation:
ratio of pencil by ball pen
pencil=25 per score
ball pen =12 per 10
10 pens 12rs
12÷10=6/5
20 pencils 25rs
25÷20=5/4
ratio=6/5÷5/4
6/5×4/5
24/25
Answer:
1:5
Step-by-step explanation:
If a pack of 10 ball pens cost $12, then each ball pen must cost 12/10 = $1.20. The ratio of $0.25:$1.20 simplifies down to 1:5 (ans).
Nishi invests £3400 at 5% interest per year. Work out how much she will have altogether after: 3 years
Answer:
£510
Step-by-step explanation:
5% of 3400 is 170. SInce she gets that much money every year, after 3 years she'll have 3*170 = £510.
Answer: Simple Interest = PRT
P= 3400
R = 5% = 5/100
T = 3
=> 3400 × 5/100 × 3 = 510
=》3400 + 510 = 3910
Step-by-step explanation:
A traveler is walking on a moving walkway airport. The traveler must walk back on the walkway to get a bag he forgot. The travelers ground speed is 2ft/s against the walkway and 8ft/s with the walkway. What is the travelers speed off the walkway? What is the speed of the moving walkway?
The travelers speed off the walkway is
The speed of the moving walkway is
If a traveler is walking on a moving walkway airport. The traveler's speed off the walkway is 5 ft/sec and the speed of the moving walkway is 3 ft/sec.
What is speed?Speed can simply be defined as how fast an object move.
Let t represent the traveler's speed in ft/sec
Let w represent the walkway's speed in ft/sec
So,
t-w =2
t+w=8
Add the equation
2t =10
Divide both side by 2t
t= 10/2
t=5fr/sec ( traveler's speed )
Speed of moving walkway
t+w =8
5+w=8
w=8-5
w=3ft/sec
Therefore the traveler's speed off the walkway is 5 ft/sec and the speed of the moving walkway is 3 ft/sec.
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Find x and y so the quadrilateral is a parallelogram.
Answer:
Summary:
The value of x = 7 The value of y = 4Step-by-step explanation:
We know that the diagonals of a parallelogram bisect each other.
As
The parallelogram PQRS is given, so
RT = TP
Given
RT = xTP = 5x-28plug in RT = x and TP = 5x-28 in the equation RT = TP
RT = TP
x = 5x-28
switch the sides
5x-28 = x
adding 28 in both sides
5x-28+28 = x+28
simplify
5x = x+28
subtract x from both sides
5x-x = x+28-x
4x = 28
divide boh sides by 4
4x ÷ 4 = 28 ÷ 4
simplify
x = 7
Therefore, we conclude that the value of x is: x = 7
Similarly,
QT = TS
Given
QT = 5yTS = 2y+12plug in QT = 5y and TS = 2y+12 in the equation QT = TS
QT = TS
5y = 2y+12
subtract 2y from both sides
5y - 2y = 2y+12-2y
simplify
3y = 12
divide both sides by 3
3y ÷ 3 = 12 ÷ 3
simplify
y = 4
Therefore, we conclude that the value of y is: y = 7
Summary:
The value of x = 7 The value of y = 4A restaurant has 44 waiters on permanent staff. It hires some temporary waiters during busy times of the year. Let t represent the number of temporary waiters and w represent the total number of waiters. Find the value of w when t=5.
Step-by-step explanation:
Since Total workers = Permanent + Temporary workers,
w = 44 + t.
Hence when t = 5, w = 44 + 5 = 49.
In a one-tail hypothesis test where you reject h0 only in the upper tail, what is the p-value if z-stat= 1. 70?
In a one-tail hypothesis test where you reject h0 only in the upper tail
-1.2910 is the p-value.
P value = P (z > 1.70) = 1 - P(2<1.7) = 0.0446
P value = P (z > -2.44) = 0.0073
t< n-1 = -1.2910
A p-value is a statistical measure used to test a hypothesis against observed data. The p-value measures the probability of getting the observed result given that the null hypothesis is true. The lower the p-value, the higher the statistical significance of the observed difference.
For null hypothesis significance tests, the p-value is the probability of obtaining an extreme test result that is at least as extreme as the actually observed result, given that the null hypothesis is true.
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solve 6x - 3 = 3x + 12
Answer:
x=5
Step-by-step explanation:
May I have brainiest I'm trying to level up!
</3 PureBeauty
Answer:
x=5
Step-by-step explanation:
6x-3 = 3x +12
+3 +3
6x = 3x +15
-3x -3x
3x = 15
divided both sides by 3 to get your answer
please help
can someone please explain standard form, i got this qustion in my math hw −7x−5y=35 and i looked over the answers and it said A=7 B=5 C+-35 we had to put it in abc form
Answer:
Standard form: 7x + 5y = −35 where A = 7, B = 5, and C = -35.
Step-by-step explanation:
The standard form, Ax + By = C, where A, B, C are constants (must be integers) and A is positive. In order to turn the constant A in your original equation into a positive integer, we can multiply both sides of the equation by -1:
(−1) (−7x − 5y) = 35 (−1)
Then, you'll have the following standard form:
7x + 5y = −35 where A = 7, B = 5, and C = -35.
The shampoo Eva likes to use costs $6 for a 24-ounce bottle. The conditioner she likes to use costs $12 for a 30-ounce bottle. How much more per ounce does her conditioner cost than her shampoo?
Answer:
0.15
Step-by-step explanation:
6 divided by 24 equals 0.25
12 divided by 30 equals 0.4
0.4 minus 0.25 is 0.15
an exam has 12 problems. how many ways can (integer) points be assigned to the problems if the total of the poitns is 100 and each problem is worth at least five points
The number of ways integer points can be assigned to the 12 problems, given that the total points is 100 and each problem is worth at least five points, can be calculated using a combinatorial approach.
To determine the number of ways, we can use the concept of stars and bars, which is a combinatorial technique used to distribute indistinguishable objects into distinguishable groups. In this case, the stars represent the total points (100) and the bars represent the dividers between the problems.
Since each problem is worth at least five points, we can consider a minimum of five points already assigned to each problem. This means we need to distribute the remaining points (100 - 12*5 = 40 points) among the 12 problems.
Using the stars and bars approach, we have 40 stars (representing the remaining points) and 11 bars (representing the dividers between the 12 problems). The number of ways to arrange these stars and bars is equivalent to the number of ways to assign points to the problems.
The answer, therefore, can be calculated using the formula for combinations with repetition: C(n + k - 1, k - 1), where n is the number of stars (40) and k is the number of bars (11).
Hence, the number of ways to assign integer points to the problems is C(40 + 11 - 1, 11 - 1) = C(50, 10).
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Which equation represents the line passing through points A and C on the graph below? On a coordinate plane, point A is at (2, 3), point B is at (negative 2, 1), point C is at (negative 4, negative 3), and point D is at (4, negative 5). y= negative x minus 1 y = negative x + 1 y = x minus 1 y = x + 1 Mark this and return
The equation of the line that passes through A and C will be y = x + 1. Then the correct option is D.
What is the equation of a line passing through two points?Let the equation of the line pass through (x₁, y₁) and (x₂, y₂). Then the equation of the line is given as,
\(\rm (y - y_2) = \left (\dfrac{y_2 - y_1}{x_2 - x_1} \right ) (x - x_2)\)
On a coordinate plane, point A(2, 3), point B(-2, 1), point C(-4, -3), and point D(4, -5).
The equation of the line that passes through A and C is written as,
(y + 3) = [(3 + 3) / (2 + 4)](x + 4)
y + 3 = x + 4
y = x + 1
The equation of the line that passes through A and C will be y = x + 1. Then the correct option is D.
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it's on the picture but please answer it because I don't know how
Answer:
I aso don't know yrr what can i do yrr
cyril is addressing 200 invitations to a reunion. He completes 20% of the invitations on wednesday and 40% of the invintations on thursday. Cyril says he has adressed 60 invitations. Why is cyrils statement not reasonable
Assume an initial starting ft of 290 units, a trend (tt) of eight units, an alpha of 0.40, and a delta of 0.50. if actual demand turned out to be 278, calculate the forecast for the next period.
The forecast for the next period when the actual demand turned out to be 278 will be 294 units.
What is the forecast?The method of forecasting entails creating assumptions based on historical and current data. These might then be contrasted with what transpires.
Ft = 290, Tt = 8, α = 0.40, δ = 0.50, At = 278. Then the forecast for the next period will be
FITt = Ft + Tt
= 290 + 8
= 298 units
Ft + 1 = FITt + α(At − FITt)
= 298 + 0.40(278 − 298)
= 298 − 8
= 290 units
Tt + 1 = Tt + δ(Ft + 1 − FITt)
= 8 + 0.50(290 − 298)
= 8 − 4
= 4 units
FITt + 1 = Ft + 1 + Tt + 1
= 290 + 4
= 294 units
The forecast for the next period will be 294 units.
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Which is NOT an ordered pair??
The ordered pair which does not satisfy the equation f ( x ) = ( 1/2 ) x - 7 is
A ( 2 , 8 )
What is an Equation of a line?The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept
And y - y₁ = m ( x - x₁ )
y = y-coordinate of second point
y₁ = y-coordinate of point one
m = slope
x = x-coordinate of second point
x₁ = x-coordinate of point one
The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )
Given data ,
Let the equation be represented as A
Now , the value of A is
f ( x ) = ( 1/2 ) x - 7
The value of f ( x ) = y
So , the ordered pair will be of the point A ( x , y )
a)
( 1 , -6 1/2 )
The value of the point A ( x , y ) = A ( 1 , -6 1/2 )
So , the equation is f ( x ) = ( 1/2 ) x - 7
Substitute the value of x and y in the equation , we get
y = ( 1/2 ) x - 7
-6 1/2 = ( 1/2 ) 1 - 7
-6 1/2 = 1/2 - 7
-6 1/2 = -6 1/2
Therefore , the ordered pair A ( 1 , -6 1/2 ) satisfies the equation
b)
( 2 , 8 )
The value of the point A ( x , y ) = A ( 2 , 8 )
So , the equation is f ( x ) = ( 1/2 ) x - 7
Substitute the value of x and y in the equation , we get
y = ( 1/2 ) x - 7
8 = ( 1/2 ) 2 - 7
8 = 1 - 7
8 ≠ -6
Therefore , the ordered pair A ( 2 , 8 ) does not satisfy the equation
c)
( -2 , -8 )
The value of the point A ( x , y ) = A ( -2 , -8 )
So , the equation is f ( x ) = ( 1/2 ) x - 7
Substitute the value of x and y in the equation , we get
y = ( 1/2 ) x - 7
-8 = ( 1/2 ) ( -2 ) - 7
-8 = -1 - 7
-8 = -8
Therefore , the ordered pair A ( -2 , -8 ) satisfies the equation
d)
( 0 , -7 )
The value of the point A ( x , y ) = A ( 0 , -7 )
So , the equation is f ( x ) = ( 1/2 ) x - 7
Substitute the value of x and y in the equation , we get
y = ( 1/2 ) x - 7
-7 = ( 1/2 ) ( 0 ) - 7
-7 = 0- 7
-7 = -7
Therefore , the ordered pair A ( 0 , -7 ) satisfies the given equation
Hence , the ordered pair A ( 2 , 8 ) does not satisfy the equation
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how many pattern block trapezoids would create 2 hexagons
The right response is, "5 hexagons are made up of 15 pattern block trapezoids."
Geometric shapes known as pattern block trapezoids are frequently utilized in arithmetic instruction. On a flat surface, they are one of a number of forms that can be used to make tessellations, or repeating patterns. Different colored plastic or foam pattern block trapezoids are available in a variety of sizes, with each color denoting a distinct size and form. Pattern block trapezoids are frequently used to teach geometry principles like area, perimeter, and angles in addition to their application in making tessellations. They can also aid in the development of kids' spatial reasoning and problem-solving skills.
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Divide.
127.6÷105
Enter your answer as a decimal in the box.
pls help
To which graph does the point (2, 4) belong? (1 point)
Answer: you didnt show any graphs but it should be plotted like this
Step-by-step explanation:
|5+5-8| how to I solve this and the answer it
Can someone help me with a b and c? Thank you so much!!!!
Answer:
See below.
Step-by-step explanation:
A)
y=3x+5
The entry fee is 5, and the fee per ride is 3, without specifying the number of rides.
B)
y=3(5)+5
y=15+5
y=20
C)
44=3x+5
-5 -5
39=3x
/3 /3
13=x
-hope it helps
Answer:
a) 3x+5
b)3(5)+5=20
c)13
Step-by-step explanation:
hope this helps brainliest appreciated
can anyone help ? No links please worth a lot of points! I also need a explaination and the answer for Z
Answer:
11.66
Step-by-step explanation:
10^2 + 6^2 = Z^2
100 + 36 = Z^2
136 = Z^2
sqrt(136) = Z
sqrt 136 = 11.66
Do 12 / 15 and 8 / 10 have the same value? Explain your answer in complete sentences.
Answer:
yes
Step-by-step explanation:
12/15 simplified by 3 is 4/5 and 8/10 simplified by 2 is also 4/5
Donna deposits $700 into an account that pays simple interest at a rate of 2% per year. How much interest will she be paid in the first 2 years
Donna deposits $700 into an account that pays simple interest at a rate of 2% per year. Donna will be paid $28 in interest in the first 2 years.
To calculate the interest, we use the formula:
Interest = Principal × Rate × Time.
In this case, the principal (initial deposit) is $700, the rate is 2% (or 0.02), and the time is 2 years.
Plugging these values into the formula, we get:
Interest = $700 × 0.02 × 2 = $28.
Therefore, Donna will earn $28 in interest in the first 2 years.
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