Audrey throws a ball in the air, and the path the ball makes is modeled by the parabola

y = −0.018(x − 20)^2 + 8 , measured in feet.

a. What is the maximum height the ball reaches,

b. How far (horizontally) from Audrey does is the ball at its maximum height?

c. How far does the ball travel before it hits the ground?

d. How high is the ball after 3 seconds?

answer: -1

step-by-step explanation:

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

c. side angle side. u shares the same sides

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation