Is 15.5 a rational number

yes!

Step-by-step explanation:

a rational number is a number that you can get by a fraction, like in this case 31/2

Yes.

Step-by-step explanation:

15.5 is a rational number, because it can be expressed as a fraction.

15 1/2

= 31/2

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.

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