Abullet is fired straight up from a bb gun with initial velocity 1120 ft./s at an initial height of 8 feet. use the formula h=-16t^2 +v0 t+8 to determine how many seconds it will take for the bullet to hit the ground. that is, when will h=0 ? round your answer to the nearest whole number

Bullet will hit the ground after 70 seconds.

Step-by-step explanation:

A bullet is fired straight up from a BB gun with initial velocity 1120 ft/s at an initial height of 8 ft.

We need to find time when bullet hit the ground.

As we know when bullet hit the ground height would be 0

So, we set h=0 and solve for t .

Using quadratic formula

Thus, Bullet will hit the ground after 70 seconds.

40 minutes

step-by-step explanation:

add the time and multiply by 2

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.