Solve the problem.A radio transmission tower is 140 feet tall. How long should a guy wire be if it is to be attached 6 feet from the top and is to make an angle of 20° with the ground? Give your answer to the nearest tenth of a foot.
A. 149.0 ft
B. 142.6 ft
C. 391.8 ft
D. 409.3 ft
Answer: C
Mathematics
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Determine whether the line integral 
is positive, negative or zero.
A. positive B. negative C. zero
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Find the quantity indicated.x varies inversely as y2. If x = 4 when y = 10, find x when y = 2.
A. x = 100 B. x = 5 C. x = 80 D. x = 16
Mathematics
Use a calculator to find the value of y in degrees rounded to two decimal places.y = tan-1 0.4555
A. 24.49° B. 26.49° C. 29.49° D. 19.49°
Mathematics
Solve the problem. Round to the nearest tenth, if necessaryThe part is 1.5 and the whole is 5.25. Find the percent.
A. 14.3% B. 28.6% C. 350% D. 2.9%
Mathematics