Solve the problem.An experimental model for a suspension bridge is built. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers stand 80 inches apart. At a point between the towers and 20 inches along the road from the base of one tower, the cable is 4 inches above the roadway. Find the height of the towers.
A. 16 in.
B. 15.5 in.
C. 16.5 in.
D. 18 in.
Answer: A
Mathematics
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Express the statement as an equation involving the indicated variables.The perimeter P of a rectangle is twice the sum of its length l and its width w.
A. P = l + w B. P = 2lw C. P = lw D. P = 2(l + w)
Mathematics
Solve the problem using the Present Value Table below.
Charles wants to retire in 17 years. At that time he wants to be able to withdraw $22,000 at the end of each year for 18 years. Assume that money can be deposited at 6% per year compounded annually. What exact amount will Charles need in 17 years?
A. $238,216.00 B. $230,494.00 C. $495,132.00 D. $245,476.00
Mathematics