56.6
step-by-step explanation:
the ratio of the perimeters is equal to the scale.
the ratio of the areas is equal to the square of the scale.
34 / 20 = k
a / 19.6 = k²
substituting:
a / 19.6 = (34 / 20)²
a = 19.6 (34 / 20)²
a ≈ 56.6
answer: a.
step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.
for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2
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