3 years ago

I don’t understand, spent 2 hours on it

Mathematics

1 answer:

Ganezh [65]3 years ago

7 0

A is 45 b is 90 and c if 90

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A balloon has a circumference of 23 cm. Use the circumference to approximate the surface area of the balloon to the nearest squa

AveGali [126]

To get the surface area of a sphere, we need to have the radius. We are given the circumference. The circumference formula is C=2πr. We need to solve for r.
23 = 2πr
r=3.66

The calculation for surface area is <span>A = 4πr^2.
</span>A = 4<span>π(3.66)^2

Solve for A.

A= 168 cm^2.</span>

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3 years ago

What is the average rate of change of the function f(X)= 2x - 1

blondinia [14]

Answer:

Step-by-step explanation:

The average rate of change of the function f(x) is

$\dfrac{f(b)-f(a)}{b-a}$