When the firecracker hits the ground, H(t) = 0.0 = -16t^2 + 90t + 160 Using the quadratic formula,t = (-90 +- sqrt(90^2 - 4(-16)(160))) / 2(-16)t = -1.42 ort = 7.04
The negative time is extraneous. Therefore,t = 7.04 s.
Seven Seconds is your answer!
X(m+n) = p
x = p/(m+n)
Hope this helps!
Answer: c
Step-by-step explanation: edge 2021
<span>x − y ≥ 3 ... > stands for above on a graph, and the line under it _ stands for shaded.</span>
