Solve the problem.A stuntman jumps from a rooftop 290 ft off the ground. How long will it take him, falling freely, to reach the ground? (Use the formula s = 16t2.)
A. About 9.1 sec
B. About 18.1 sec
C. About 68.1 sec
D. About 4.3 sec
Answer: D
Mathematics
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Solve the problem.The equation D = 
n(n - 3) gives the number of diagonals D for a polygon with n sides. Use this equation to solve the problem. Find the number of sides n for a polygon that has 90 diagonals.
A. 15 sides B. 3 sides C. 12 sides D. 16 sides
Mathematics
Simplify the algebraic expression.4.2(-2.4x - 1.4)
A. -10.08x - 1.4 B. -10.08x - 5.88 C. 10.08x - 1.4 D. 10.08x - 5.88
Mathematics
Evaluate the expression for the given replacement values.x2 for x = -0.6
A. 0.36 B. -1.2 C. -3.6 D. -0.36
Mathematics
Find the exact value, given that 
with A in 
with B in 
and 
with C in 
sin 2C
A. 
B. 
C. - 
D. - 
Mathematics