Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Add or subtract. Simplify the answer.
- 
A. 
B. 
C. 
D. 
Mathematics
Solve.9p = 7(2p + 3)
A. 
B. 
C. 
D. - 
Mathematics
Solve the problem.A certain radioactive isotope has a half-life of approximately 1250 years. How many years to the nearest year would be required for a given amount of this isotope to decay to 70% of that amount?
A. 2171 yr B. 375 yr C. 643 yr D. 573 yr
Mathematics
Find the area A. Round the answer to three decimal places.
A. 20 ft2 B. 62.832 ft2 C. 3.142 ft2 D. 31.416 ft2
Mathematics