Choose the expression which is equivalent to the given expression.2 sin 14° cos 14°

A. cos 28°
B. cos 7°
C. sin 28°
D. sin 7°


Answer: C

Mathematics

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Find the product.2y3(3y + 2)(y + -5)

A. -20y4 + -20y3 B. 6y5 + -20y3 C. -26y4 + -20y3 D. 6y5 + -26y4 + -20y3

Mathematics

Find the inverse of the one-to-one function.f(x) = 

A. f-1(x) = 
B. f-1(x) = 3x
C. f-1(x) = 
D. f-1(x) = -3x

Mathematics

Solve the equation by completing the square.x2 + 4x - 9 = 0

A. {-1 -  , -1 + }
B. {-2 -  , -2 + }
C. {-2 - 1 , -2 + 1}
D. {2 + }

Mathematics

Solve the problem.Hamlet has a credit card balance of $5655.12 with an annual percentage rate of 19.9%. His card requires a minimum payment of 2% of the total balance. What is his minimum payment?

A. $113.10 B. $19.90 C. $1125.37 D. $1131.02

Mathematics