SOMEONE PLEASE HELP ME ASAP THIS IS ALMOST DUE ILL MARK BRAINLIEST

64.5°

25

Step-by-step explanation:

64.5° (If they are similar, they have the same angle measurements).

You can figure out z by using ratios.

6/10=15/z

cross multiply

150=6z

150÷6=z

z=25 (Although, there is a problem with this.  If you use the Pythagorean theorem to find z, you get 28.8).

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

20

step-by-step explanation: