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brilliants [131]
3 years ago
6

A cement truck pours cement into a container in the shape of a cylinder with a radius of 4 feet. The height, h, of the cement in

the container increases at a rate of approximately 10 inches per minute. Write an equation that models the volume, V, of the cement in the container in terms of h, then use the equation to determine the time at which the volume is 80π cubic feet. Note that the volume of a cylinder is V=πr2h, where r and h are the radius and height of the cylinder.
Mathematics
1 answer:
julsineya [31]3 years ago
7 0

Answer:

2009.6  and 13824 minutes and 230.4 hours

Step-by-step explanation:

v=3.14 x 4 x 2 x 80= 2009.6

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(16−10) 2−(20÷5)×3 exponet 2 <br> to three
inysia [295]
Use PENDAS it helps a lot.
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3 years ago
What’s the answer for number 5
Paul [167]

Answer:

D. 343 3/4

Step-by-step explanation:

1 inch = 125 miles

There is a distance of 2 3/4 inches

The first thing you would do is double 125, since it is one inch, and 2 inches would another 125. Now you have 250. To get the rest, you would need to divide 125 by 4, getting 31.25. Now since the question needs 3/4 of 125, you multiply 31.25 by 3, which is 93.75. Now add 250, and 93.75. You get 343.75, or 343 3/4

8 0
3 years ago
Plz help will name brainiest and 100 points
xxTIMURxx [149]

Answer:

51

Step-by-step explanation:

Multiply 3 2/5 by 15

Change the mixed number to an improper fraction

3 2/5 = (5 * 3 + 2) /5 = 17/5

17/5 * 15

17 * 15/5

17 * 3

51

4 0
3 years ago
Read 2 more answers
What is this statement Segment AB is congruent to segment AB.
Feliz [49]

Answer:

reflective

Step-by-step explanation:

This statement shows the reflective property.

6 0
4 years ago
What was Dimitri's mistake? He mixed up the coordinates of the ordered pair when Substituting it into the equations 7x+9y=-4 and
seropon [69]

Answer:

He made a mistake in his calculations when simplifying 5x - 2y

Step-by-step explanation:

Given

The coordinate pair

(x,y) = (2,-2)

The equations

7x + 9y = ?

5x - 2y = ?

Dimitri's Solution

Equation\ 1: 7x + 9y = -4.

7(2) + 9 (-2) = -4.

14 + (-18) = -4.

-4 = -4.

Equation\ 2: 5x -2y = 6.

5(2) - 2 (-2) = 6.

10 - 4 = 6.

6 = 6.

Required

Identify Dimitri’s mistake

In the first equation, Dimitri made no mistake.

However, he made a mistake when simplifying the second equation.

We have:

5x - 2y

and

(x,y) = (2,-2)

Substitute x = 2 and y = -2

So, we have:

5(2) -2(-2)

Open bracket

10 +4

Finally, we have:

14

7 0
3 years ago
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