Use the rules of exponents to simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive real numbers.y1/3(y4/9 - 5y2/9)
A. y-1/9 - 5y1/9
B. y7/9 - 5y5/9
C. y4/27 - 5y2/27
D. y3/4 - 5y3/2
Answer: B
Mathematics
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Subtract. Write the answer in lowest terms.
- 
A. 
B. 
C. 
D. 
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Write as a decimal.0.87%
A. 0.0087 B. 0.087 C. 0.87 D. 0.0097
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Evaluate without using a calculator by using ratios in a reference triangle.sin 60°
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The price of electric guitars has varied considerably in recent years. The data in the table relates the price in dollars, to time in years. Use a cubic function fitted to the data to predict the price of an electric guitar in year 10. 
A. $827.42 B. $893.53 C. $670.48 D. $443.52
Mathematics