A pumpkin is launched from the top of a 20-foot tall platform at an initial velocity of 84 feet per second. The height, h(t), of the pumpkin at time t seconds after launch can be modeled by the equation h(t)=−16t2 +84t+20.
a. Find the maximum height reached by the pumpkin.
b. How long did it take for the pumpkin to reach the maximum height?
c. When does the pumpkin reach a height of 100 feet?

bn,mn,n.vn.

step-by-step explanation:

i dont know men

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

i have no clue what you just said. write a question in english?