Make a the subject of the formula

a = (3r^2)/2

Step-by-step explanation:

Start by squaring both sides. Then we have

r^2 = 2a/3

r^2 * 3 = 2a/ 3 * 3     multiply both sides by 3.

3r^2    = 2a

2a/2    = 3r^2/2         divide both sides by 2.

a          =(3r^2)/2

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for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2