Solve the problem.A balloon is secured to rope that is staked to the ground. A breeze blows the balloon so that the rope is taut while the balloon is directly above a flag pole that is 20 feet from where the rope is staked down. Find the altitude of the balloon if the rope is 60 feet long.
A. 8
ft
B. 2
ft
C. 40
ft
D. 20
ft
Answer: C
Mathematics
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Solve the problem.The voltage E in an electrical circuit is given by E = 5.7 cos 110?t, where t is time measured in seconds. Find the amplitude.
A. 5.7 B. 110? C. 11.4 D. 110
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In the following figure, each polygon is regular. Find the angle measures X and Y.
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Use the properties of logarithms to evaluate the expression.logaa9
A. a9 B. 1 C. 9 D. 9loga a
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Solve.Two trains leave a train station at the same time. One travels north at 10 miles per hour. The other train travels south at 11 miles per hour. In how many hours will the two trains be 111.3 miles apart?
A. 5.3 hr B. 10.6 hr C. 5.8 hr D. 2.7 hr
Mathematics