Solve the problem.A radio transmission tower is 140 feet tall. How long should a guy wire be if it is to be attached 11 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. 409.3 feet
B. 149.0 feet
C. 137.3 feet
D. 377.2 feet
Answer: D
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The point in a lunar orbit nearest the surface of the moon is called perilune and the point farthest from the surface is called apolune. The Apollo 11 spacecraft was placed in an elliptical lunar orbit with perilune altitude 106 km and apolune altitude 318 km (above the moon). Find an equation of this ellipse if the radius of the moon is 1728 km and the center of the moon is at one focus.
What will be an ideal response?
Solve the problem.The width of a rectangle is 6 kilometers less than twice its length. If its area is 108 square kilometers, find the dimensions of the rectangle.
A. width = 9 km, length = 12 km B. length = 6 km, width = 6 km C. length = 3 km, width = 36 km D. length = 9 km, width = 12 km
Solve the problem.Assume that a person's salary is $29,500 for the first year and that this person will receive a 4 percent raise at the end of each year. Let cn represent the person's salary (in thousands of dollars) for the nth year.i) Find a formula for cn.ii) When will the salary first be above $50,000?iii) What will be the person's salary for the 30th year?iv) What will be the total amount of money earned for 30 years?
What will be an ideal response?
Simplify. Do not leave negative exponents in your answer.(-9)-3
A. 
B. - 729
C. 
D. - 