on a windy morning, a hot air balloon starts ascending and flying away from the top of the hill. the altitude, h, in feet, of the balloon x hours after startijg its ascent from the hill can be modeled by the function -16x^2+64x+80. does the parabola open up or down? identify the x and y intercepts

its d. the first coordintaes are 10,32

step-by-step explanation:

1 and 0

step-by-step explanation:

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2