Solve the problem.In an electric circuit, the electromotive force is defined as V = cos 2?t, where t is time in seconds. Solve the equation for t.
A. t = 2? cos V
B. t = 
cos V
C. t = 2? arccos V
D. t = 
arccos V
Answer: D
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Add or subtract as indicated.(13x + 29xy - 10y) - (24x - 5xy - 17y)
A. 30xy B. -16x + 11xy + 27 C. -11x + 34xy + 7y D. -11x - 34xy - 27y
Convert the given polar coordinates of the point to rectangular coordinates.(10, 45°)
A. (5
, 5)
B. (-5
, -5)
C. (5
, 5
)
D. (-5, -5
)
Solve the problem.A man borrowed $3000 at 10% interest compounded annually. If he paid off the loan in full at the end of 5 years, how much did he pay?
A. $1831.53 B. $4500.00 C. $4831.53 D. $3300.00
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. An insurance company is willing to insure the concert for $150,000 against rain for a premium of $30,000. If he buys this policy, what are his expected earnings from the concert?
A. $180,000 B. $300,000 C. $270,000 D. $239,400