Use a product-to-sum identity to rewrite the expression.cos 
sin 
A. 0.5
B. 0.5
C. 0.5
D. 0.5
Answer: A
Mathematics
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. (72)-1
A. 
B. - 
C. -14
D. -49
Mathematics
Solve the problem.A customer purchased 3 bottles of nail polish for $2.70 each. How much does a salesperson earn on this sale if the rate of commission is 37%? Round to the nearest cent.
A. $29.97 B. $1.00 C. $3.00 D. $8.10
Mathematics
Add or subtract. Write the answer in lowest terms.
- 
A. 
B. 
C. 
D. 
Mathematics
Estimate the quotient by first rounding each number as indicated.9.78 ÷ 5; Estimate by first rounding each number to the nearest one.
A. 0.2 B. 0.02 C. 20 D. 2
Mathematics