H = –16t2 + 156t + 105, when t = t', the time where the rocket hit the ground after it is launched, so 105= –16t'2 + 156t' + 105, so -16t'2 + 156t' = 0 implies t' =0 or -16t'+ 156= 0, equivalent to t'=9.75, so the answer is
b) <span>9.8 s</span>
Answer:
387 contains 80 and 8 x 10 = 80
Step-by-step explanation:

Answer:
320 degrees
Step-by-step explanation:
There are 360 degrees in a circle. 360-40=320
Answer:
The slope for the line is 2