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3 years ago

Please help me ASAP really need help!!!

Mathematics

1 answer:

Hatshy [7]3 years ago

4 0

Answer:

2.7

Step-by-step explanation:

the scale factor should be consistant as you scale up and down. So you can divide 4.59 by its corresponding side of 1.7 in order to get the scale factor of 2.7. When repeated with the other sides this number should remian consitant.

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Assume that the radius rr of a sphere is expanding at a rate of 19 in./min.19 in./min. The volume of a sphere is V=43πr3V=43πr3.

djverab [1.8K]

Answer:

$744876\pi in^3/min$ .

Step-by-step explanation:

We are given that

$\frac{dr}{dt}=19 in/min$

Volume of sphere= $\frac{4}{3}\pi r^3$

$r=4 at t=0$

$dr=19 dt$

Integrating on both sides then we get

$r=19 t+C$

Substitute r=4 and t=0

$4=C$

$r=19t+4$

$\frac{dV}{dt}=4\pi r^2\frac{dr}{dt}$

$\frac{dV}{dt}=4\pi (19t+4)^2(19)$

Substitute t=5

$\frac{dV}{dt}=4\pi (19(5)+4)^2(19)$

$\frac{dV}{dt}=4 \pi (99)^2 (19)=744876\pi in^3/min$

Hence, the volume is changing at the rate of $744876\pi in^3/min$ .

7 0

3 years ago

Hello Brainly User please help me I will mark brainliest. Its really east math please help me

ANEK [815]

1. not function
not function
not function (i’m pretty sure)

2. not function
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7 0

3 years ago

Reduce to simplest form.<br> -7/12 +3/8

faust18 [17]

Answer:

-5/24

Step-by-step explanation:

here u gooo :).....

4 0

3 years ago

What is the slope of the following graph? (write your answer as a fraction unless divided by 1. Do not use spaces in your answer

alexira [117]

The slope of the graph is 4/5

<h3>How to determine the slope</h3>

Using the formula

Slope = Δ y-axis / Δ x- axis

y2 = -4

y1 = 0

x2 = -5

x1 = 0

Slope = $\frac{y2 - y1}{x2 - x1}$

Substitute the values into the formula

<em>Slope = </em> $\frac{-4 - 0}{- 5 - 0}$

Slope = $\frac{-4}{-5}$

Slope = $\frac{4}{5}$

Therefore, the slope of the graph is 4/5

Learn more about slope here:

brainly.com/question/3493733

#SPJ1

5 0

2 years ago

A. 2<br> B. -2<br> C. 1/2<br> D. -1/2

allsm [11]

Rate of change is the slope.

The slope is the change in Y over the change in X:

Slope = (5- -3) / (2 - -2)

Slope = 8/4

Slope = 2

Answer: A.2

7 0

3 years ago