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3 years ago

16. The length of the hypotenuse of a 45°-

Mathematics

1 answer:

zlopas [31]3 years ago

8 0

I think its a. 36+18/2

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One step equations x/4 =9

Tamiku [17]

Hi Natalie

We have x/4 = 9

All you have to do is cross multiplication

x = 4*9

x= 36

That's all :)

I hope that's help:)

Now if you wanna check my answer just replace x by 36

36/4 = 9

9= 9

Because when you divide 36 by 4 you will find 9

I hope that's help:)

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3 years ago

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What is the ratio of 6:21?

VMariaS [17]

That is a ratio. If you mean the simplified version, then 2:7

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3 years ago

Let A(t) be the area of a circle with radius r(t), at time t in min. Suppose the radius is changing at the rate of drdt=6 ft/min

mylen [45]

Answer:

The rate of change is $108\pi$ ft^(2)/min

Step-by-step explanation:

The area of a circle is given by the following equation:

$A(t) = \pi r^{2}$

To solve this question, we have to realize the implicit differentiation in function of t. We have two variables, A and r. So

$\frac{dA(t)}{dt} = 2\pi r \frac{dr}{dt}$

We have that:

$\frac{dr}{dt} = 6, r = 9$ .

We want to find $\frac{dA}{dt}$

$\frac{dA(t)}{dt} = 2\pi*9*6$

$\frac{dA}{dt} = 108\pi$

Since the area is in square feet, the rate of change is in ft^(2)/min.

So the rate of change is $108\pi$ ft^(2)/min

5 0

3 years ago

Given the graph below, find PQ

murzikaleks [220]

Answer:

P=(-5,-1)

Q=(2,-4)

Step-by-step explanation:

hope this helps

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3 years ago

Which is the correct answer?

adoni [48]

Answer:

Step-by-step explanation:

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