Answer:
1
Step-by-step explanation:
Remember that anything to the power of 0 is equal to 1
4.51^0 = 1
1 is your answer
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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!
i dont know, my personal thoughts is that I will not do it:)
Answer:
0.83333333333
Step-by-step explanation:
you divide -12 both sides but its a really odd number
