Megan gets ready to launch the same rocket from a platform 21 feet above the ground with the same initial velocity. how long will the rocket stay in the air this time?
a. write a function that represents the rocket's path for this launch.
b. factor the corresponding equation to find the values for t when h is zero.
c. erin says that the roots of the equation are t = 5.25 and t= -20.25 and that the rocket will stay in the air 5.5 seconds. megan says she is wrong. who is correct? how do you know?

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.

step-by-step explanation:

sorry i just needed points for a quiz plz for give me

363 square inches

step-by-step explanation:

surface area of a pyramid is b + 1/2ph

b is the area of the base: 11 x 11 = 121

p is the perimeter of the base: 11 + 11 + 11 + 11 = 44

h is the height of the pyramid: 11

121 + 1/2(44)(11)

121 + 242

363