Use the given trigonometric function value of ? to find the requested trigonometric function value of the acute angle ?. Rationalize the denominators where necessary.cos ? =    Find sec ?.

A.
B.
C.
D.

Answer: C

Mathematics

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src="https://sciemce.com/media/4/ppg__text0425191437__f1q37g6.jpg" alt="" style="vertical-align: -23.0px;" /> A. 900 km B. 342 km C. 297 km D. 146 km

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Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.(9x - )( - )

A. 9x2 - 9x + 10
B. 9x2 + 10
C. 9x2 - 8x  + 10
D. 9x2 - 9x -  + 10

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Solve the problem.The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 2 amperes when the resistance is 355 ohms. What is the current when the resistance is 570 ohms?

A. 3.2 amp B. 0.8 amp C. 0.31 amp D. 1.2 amp

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Evaluate the expression.(f ? g)(a) when f(x) = 5x + 12 and g(x) = 3x - 1.

A. 15a + 17 B. 15a + 35 C. 15a + 11 D. 15a + 7

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