A ball is thrown straight up from a rooftop 320 feet high. The formula below describes the ball's height above the ground, h, in feet, t seconds after it was thrown. The ball misses the rooftop on its way down and eventually strikes the ground. How long will it take for the ball to hit the ground? Use this information to provide tick marks with appropriate numbers along the horizontal axis in the figure shown.

h=-16t^2+16t+320

6 0

3 years ago

Read 2 more answers

3∙(a+x), if a=8; x=−10

Oksi-84 [34.3K]

Your answer should be -6

6 0

4 years ago

Are the graphs of the lines in the pair parallel? Explain. y = 4x – 4 24x – 4y = 96

zaharov [31]

No, since the slopes are different

for 1 line
y = 4x - 4

slope = 4

for 2 line
4y = 24x - 96
slope = 24/4 = 6