H=-16t^2+56t+1, the airplane is shot up from a platform 1 foot above the ground, so 1= - 16t^2+56t+1, we solve this equation
(- 16t+56)t=0, (- 16t+56)=0 or t=o, - 16t+56=0, implies t =3.5s
so the answer is C)3.5 seconds
Answer:
4435.2 miles gor 21 days
Step-by-step explanation:
there is 24 hours in 1 day
24 x 21 = 504

Answer:
Our answer is
.
Step-by-step explanation:
To solve for x, we need to isolate the variable. We can do so by subtracting 2 to both sides.

Our answer is
.
To find the decimal, calculate with a calculator.
Answer:
15x is your answer. Hope this helps.