Multiply the expressions.(2r - 5)(2r + 5)
A. 2r2 - 25
B. 4r2 - 20r - 25r2
C. 4 + 20r - 25r2
D. 4r2 - 25
Answer: D
Mathematics
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Solve the problem.An employee earned $17,027 this year. This was a raise of 10% over last year. What was his salary last year? Round to the nearest dollar, if necessary.
A. $16,857 B. $15,324 C. $15,479 D. $17,017
Mathematics
Write the decimal using numbers.nine million, one hundred and nineteen ten-thousandths
A. 9100.0019 B. 0.00900119 C. 9,000,100.0019 D. 9,000,100.019
Mathematics
Solve.
= -4
A. 16
B. -4, 4
C. 
D. No solution
Mathematics
Determine by inspection a particular solution for the following system of linear equations:
What will be an ideal response?
Mathematics