Use the laws of exponents to simplify. Write the answer with positive exponents.z-2/5 ? z3/5
A. z5/6
B. z1/5
C. z-1/5
D. z6/5
Answer: B
Mathematics
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Establish the identity.sin ?[sin ? + sin(5?)] = cos(2?)[cos(2?) - cos(4?)]
What will be an ideal response?
Mathematics
Simplify.
A. 11 B. 0 C. 22 D. -11
Mathematics
Solve the problem.The sales tax rate in one state is 6.75%. How much tax will be charged on a purchase of 8 chairs at $60 a piece? Round your answer to the nearest cent.
A. $324.00 B. $64.05 C. $4.05 D. $32.40
Mathematics
Multiply. Write the answer in lowest terms.
? 
A. 
B. 
C. 
D. 
Mathematics