Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.sin 495°

A.
B. - 
C. - 
D.


Answer: D

Mathematics

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Solve by completing the square.x2 + 14x = -40

A. 410
B. -4-10
C. ±
D. 50, -10

Mathematics

Solve the problem.Suppose the supply and demand for a certain videotape are given by: supply: p = q2; demand: p = - q2 + 32where p is price and q is quantity.How many videotapes are demanded at a price of $24? 

A. About 8 B. About 7 C. About 9 D. About 6

Mathematics

Solve the problem.A meteorologist in the Upper Peninsula of Michigan predicts an overnight low of  Fahrenheit. What would a Canadian meteorologist predict for the same location in Celsius?

A. -23.3° B. -10° C. -42° D. -5.6°

Mathematics

Multiply.-2.2(-18)

A. -15.8 B. 20.2 C. -20.2 D. 39.6

Mathematics