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lara [203]
3 years ago
8

The data set shows the numbers of hours students study the week before a test. Find and interpret the mean absolute deviation of

the data. Write your answer as a decimal. 3, 4, 5, 6, 6, 7, 8, 8, 9, 9 The data values differ from the mean by an average of hours.
Mathematics
1 answer:
patriot [66]3 years ago
4 0

Step-by-step explanation:

3 + 4 + 5 + 6 + 6 + 7 + 8 + 8 + 9 + 9 / total of numbers or 10 = 65 ÷ 10 = 6.5 This is the mean.

3 - 6.5 = 3.5

4 - 6.5 = 2.5

5 - 6.5 = 1.5

6 - 6.5 = 0.5

6 - 6.5 = 0.5

7 - 6.5 = 0.5

8 - 0.5 = 7.5

8 - 0.5 = 7.5

9 - 0.5 = 8.5

9 - 0.5 = 8.5

MAD = 1.7

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water enters a pool at an increasing rate given by W(t)=1+3t gallons per minute from t=0 to t=5 minutes. Find the amount of wate
Scorpion4ik [409]

The amount of water that has entered the pool over these five minutes is 42.5 gallons.

Given the rate at which water enter the pool W(t). To calculate the amount of water that has entered the pool over these five minutes, we integrate W(t) over the interval t = 0 to t = 5.

Amount\ of \ water=\int\limits^0_5 {W(t)} \, dt \\\\\\Amount\ of \ water=\int\limits^0_5 {(1+3t)} \, dt \\\\\\Amount\ of \ water=[t+1.5t^2]_0^5\\\\\\Amount\ of \ water=42.5\ gallons

The amount of water that has entered the pool over these five minutes is 42.5 gallons.

Find out more on integration at: brainly.com/question/23976638

4 0
2 years ago
Consider the following number sentence: 3 + 2 + 2 + 2 + 2 Simplified: 3 + 4(2) = 11 Consider the following sentence: 3 + a + a +
zhannawk [14.2K]

Answer:

18

Step-by-step explanation:

Step 1: Substitute 15 for <em>a</em>

3 + 3(5)

Step 2: Solve

3 + 15

18

And we have our answer!

6 0
3 years ago
Read 2 more answers
How many solutions does the system have? y=−2x+4
Anna11 [10]

Answer:

There is only one solution and the solution is (0,4).

Step-by-step explanation:

The given system has equations;

y=-2x+4

and

y=x^2-2x+4

We equate the two equations to determine their point of intersection;

x^2-2x+4=-2x+4

\Rightarrow x^2-2x+2x+4-4=0

\Rightarrow x^2=0

\Rightarrow x=0

We put x=0 into the first equation to get;

y=-2(0)+4=4

There is only one solution and the solution is (0,4).

3 0
3 years ago
Read 2 more answers
Can someone please help me with this question
Agata [3.3K]

The volume of the styrofoam collar is approximately 1,960.35 in^{3} .

Step-by-step explanation:

Step 1:

The given styrofoam collar is a hollow cylinder. A hollow cylinder consists of an outer radius and an inner radius.

This given hollow cylinder has an outer radius of 8 inches and an inner radius of 5 inches. The height of the cylinder is 16 inches.

To calculate the volume of a hollow cylinder we subtract the volume of a cylinder constructed with the inner radius from the volume of a cylinder with the outer radius.

Step 2:

The volume of a cylinder, V = \pi r^{2} h.

For the outer cylinder, r = 8 inches and h=16 inches.

The volume of the outer cylinder, V_{1} = \pi (8^{2})(16) = 3,216.99.

For the inner cylinder, r = 5 inches and h=16 inches.

The volume of the inner cylinder, V_{2} = \pi (5^{2})(16) = 1,256.637.

Step 3:

The volume of the styrofoam collar = V_{1} -V_{2},

The volume of the styrofoam collar = 3,216.99-1,256.637 = 1,960.353.

Rounding this off, we get the volume of the styrofoam collar as 1,960.35 in^{3} .

4 0
3 years ago
If f(x) = x^2, which of the following describes the graph of f(x) - 5?
12345 [234]
In any given equation, a positive or negative number that isn't multiplied by a variable is called "b", or "y-intercept." Seeing as y-5 (f(x) is the same as y) isn't an equation, it probably means you need to add 5 to both sides to isolate y.
you end up with y=5, a horizontal line in which every "y" value in every set of points is equal to 5
Ex: (1,5),(2,5),(3,5)...
this means that your parent function of y=0 has a vertical shift upwards of five. hope I could help :)
7 0
3 years ago
Read 2 more answers
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