Suppose a flare is shot from the top of a 120 foot building at a speed of 160 feet per second. The equation h = ?16t + 160t + 120 models the h height at t seconds of the flare. How long will it take for the flare to hit the ground? (to the nearest tenth of a second)

The time taken for the flare to hit the ground is approximately 10.7 seconds.

Step-by-step explanation:

Given : Suppose a flare is shot from the top of a 120 foot building at a speed of 160 feet per second. The equation models the h height at t seconds of the flare.

To find : How long will it take for the flare to hit the ground?

Solution :

The equation   models the h height at t seconds of the flare.

The flare to hit the ground when h=0.

Substitute in the equation,

Applying quadratic formula,

Where, a=-16, b=160 and c=120

Reject the negative value.

Therefore, the time taken for the flare to hit the ground is approximately 10.7 seconds.

the answer is -1 1/5, also a

hope i

-lavira : )