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3 years ago

PLEASE HELP ME!! I AM TAKING A TEST AND I NEED TO KNOW THE ANSWER!!!! GIVING BRAINLIEST

Mathematics

2 answers:

Sloan [31]3 years ago

4 0

Answer:

Yes

Step-by-step explanation:

Both angles can be 90 degrees

Bad White [126]3 years ago

4 0

Answer:

Yes

Step-by-step explanation:

If there is a right triangle, both the interior and exterior angle of that side will be 90 degrees

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Bernie already has 13 plants in his backyard, and he can also grow 13 plants with every

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5 seed packets

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3 years ago

If Siobhan hits a 0.25 kg volleyball with 0.5 N of force, what is the acceleration of the ball?

krek1111 [17]

Answer:

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Therefore,

acceleration = Force / mass

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3 years ago

The area of a circular oil slick on the surface of the sea is increasing at a rate of [150m^2/s] how fast is the radius changing

Akimi4 [234]

Answer with Step-by-step explanation:

We are given that

$\frac{dA}{dt}=150m^2/s$

a.Radius =25 m

We have to find rate of change of radius.

We know that

Area of circle, $A=\pi r^2$

Differentiate w.r.t time

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

Substitute the values then we get

$150=2\pi (25)\frac{dr}{dt}$

$\frac{dr}{dt}=\frac{150}{50\pi}=\frac{3}{\pi} m/s$

$\frac{dr}{dt}=\frac{3}{\pi} m/s$

b.A= $1000m^2$

Substitute the values then we get

$1000=\pi r^2$

$\pi=3.14$

$r^2=\frac{1000}{3.14}$

$r=\sqrt{\frac{1000}{3.14}}=17.8m$

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

Substitute the values then we get

$150=2\pi(17.8)\frac{dr}{dt}$

$\frac{dr}{dt}=\frac{150}{2\pi(17.8)}=\frac{150}{35.6\pi}$ m/s

$\frac{dr}{dt}=\frac{75}{17.8\pi}$ m/s

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