2 years ago

What is the value of x? Leave your answer in simplest radical form.

1 answer:

8 0

2²+4²=x²
4+16=x²
√20= √x²
2√5= x

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DanielleElmas [232]

The radius of the sphere decreases at the rate of 6 m/ sec

That is, $\frac{dr}{dt}=-6$

Surface Area of the sphere of radius r is given by $S=4\pi r^2$

Differentiating with respect to t,

$\frac{dS}{dt}=4\pi (2r)\frac{dr}{dt}=8\pi r\frac{dr}{dt}$

$\frac{dS}{dt}=8\pi (20)^2(-6)=-960\pi \: m^2/sec$

8 0

3 years ago

anzhelika [568]

It's d ok
$- 900$

5 0

3 years ago

enyata [817]

190,969 should be the answer

4 0

3 years ago

Harlamova29_29 [7]

Answer:

Yes circumference divided by ratio equals to pi

7 0

3 years ago

gogolik [260]

Z = -2/3a
divide by -2/3 on both sides
a = z divided by -2/3
a = -3/2z

6 0

3 years ago