The vertex of a parabola that opens downward is at (0,4). The vertex of a second parabola is at (0, -4). If the parabolas intersect at two points, which statement must be true?

a

step-by-step explanation:

it is x equals 3   plese mark me really need it

step-by-step explanation:

answer: list the statements and i will follow up!

step-by-step explanation:

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15