A ball is thrown upward with an initial velocity of 64 ft/sec from a height 720 ft. Its height s, in feet, after t seconds is given by s = - 161? + 64+ + 720. After how long will the ball reach the ground?
7200

x+y = 29, 5x + 2y = 100

step-by-step explanation:

i'm guessing it was a multiple first option was the correct answer

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.

b

step-by-step explanation:

i dont know

where is the graph, sweetheart?

step-by-step explanation: