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!
Step-by-step explanation:
the number which is a perfect cube :
125, because 125 = 5³
this is an example of linear equations is one variable
Answer:
H. 8.874 hours
Step-by-step explanation:
There is a seven, that has the value of 7/100. 7/100 as a decimal is .07 because there is a 7 in the hundredths place. There has to be a number that contains 7/100, or a value in the hundredths place, and that is 8.874.
Hope this helps!
Answer:
picture?
Step-by-step explanation:
