Use a double-angle formula to rewrite the expression.
?
10 cos2 x - 5
?
A. 5 cos x
B. ?cos 5x
C. ?10 cos 2x
D. ?10 cos x
E. ?5 cos 2x
Answer: E
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;-3 ? x ? 3, -3 ? y ? 3
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Determine the sum or difference in the given clock arithmetic.(3 - 4) - 6 (clock 6)
A. 3 B. 6 C. 5 D. 2
Provide an appropriate response.Perform the indicated operation. Express as an ordinary number. 0.37 ? 10-3
Fill in the blank(s) with the appropriate word(s).
Decide whether the statement is true or false.If the numerator and the denominator of a fraction are different prime numbers, then the fraction is always in lowest terms.
A. False B. True