Answer:
“The width of the compass is adjusted to DE, and an arc is drawn from point F.”
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!
Answer:
18 is 1 and 8 put togother.
Step-by-step explanation:
Answer:

Step-by-step explanation:

The next bigger ten is 913,620 .
The next smaller ten is 913,600.
913,610 is exactly in the middle between them.
913,610 is already written to the nearest ten.