Solve the problem.Consider the quadratic model h(t) = -16t2 + 40t + 50 for the height (in feet), h, of an object t seconds after the object has been projected straight up into the air. Find the maximum height attained by the object. How much time does it take to fall back to the ground? Assume that it takes the same time for going up and coming down.
A. maximum height = 75 ft; time to reach ground = 2.5 seconds
B. maximum height = 50 ft; time to reach ground = 2.5 seconds
C. maximum height = 50 ft; time to reach ground = 1.25 seconds
D. maximum height = 75 ft; time to reach ground = 1.25 seconds
Answer: A
Mathematics
You might also like to view...
Find the limit.
A. -? B. 0 C. Does not exist D. ?
Mathematics
Solve.The outside of a water storage tank is in the shape of a sphere. Approximate to the nearest hundredth the volume of the tank with a radius of 18.1 feet. Use 3.14 for ?.
A. 24,825.85 cu ft B. 18,619.39 cu ft C. 1028.7 cu ft D. 1371.59 cu ft
Mathematics
Determine which value(s), if any, must be excluded from the domain of the variable in the expression.
A. x = 0 B. x = -8 C. x = 8 D. none
Mathematics
Evaluate.P(13, 6)
A. 
B. 8,648,640
C. 1716
D. 1,235,520
Mathematics