Use a double-angle identity to find the exact value of the expression.1 - 2 sin2 67.5°

A. - 
B.
C.
D. - 

Answer: A

Mathematics

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Provide an appropriate response.Let f and g be defined by the following table: Find  + [g(-1)]2 - f(0) ÷ g(2) ? g(1)

A. 47
B. 7
C. 16
D.

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Mathematics

Simplify.

A. xy
B. 2x5y7
C. -2x5y7
D. 2x11y9

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Mathematics

Using the Rule of 78, find the amount of unearned interest for the loan paid in full before the date of maturity. Round to the nearest cent.Finance charge: $80,696Total number of payments: 354Remaining number of payments, when paid in full: 22

A. $326.76 B. $324.92 C. $296.66 D. $298.34

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Mathematics

Simplify the expression. Assume all variables represent positive real numbers.3 + 

A. 7
B. 3 + 
C. 4
D. 12

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Mathematics