Will give Brainliest to whoever answers first! How do the graphs of f(x)=8x² and g(x)=2x² compare?

A. The graph of f(x) is 4 units above the graph of g(x).

B. The graph of f(x) is 4 units below the graph of g(x).

C. The graph of f(x) is wider than the graph of g(x).

D. The graph of f(x) is narrower than the graph of g(x).

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

ask the math teacher she or he would know lol.

step-by-step explanation: