Solve the problem.If an object is thrown upward with an initial velocity of 128 ft/sec, its height after t sec is given by 
Find the number of seconds before the object hits the ground.
A. 4 sec
B. 112 sec
C. 64 sec
D. 8 sec
Answer: D
Mathematics
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Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = - 4 and x = 4. The cross sections perpendicular to the x-axis are semicircles whose diameters run from 
to 
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Find an equation of the hyperbola centered at the origin that satisfies the given condition. Vertices: (±4, 0), asymptotes: FIGURE 1.png)
What will be an ideal response?
Mathematics
Solve for the specified variable.S = 
for r
A. r = 
B. r = S - a
C. r = 
D. r = 
- 1
Mathematics
Use the Principle of Mathematical Induction to show that the statement is true for all natural numbers n.3 + 3 ? 
+ 3 ? 
2 + ... + 3 ? 
n - 1 = 
What will be an ideal response?
Mathematics