Use Cramer's Rule (if applicable) to solve the system of equations.
A. {(5, -2)}
B. {(-5, 2)}
C. {(2, -5)}
D. {(-2, -5)}
Answer: B
Mathematics
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Rationalize the denominator. - 
A. -24
B. -7
C. - 
D. - 
Mathematics
Find the second term in the expansion of  figure 1.png)
 figure 2.png)
Mathematics
Solve the problem.Helen Weller invested $13,000 in an account that pays 12% simple interest. How much additional money must be invested in an account that pays 15% simple interest so that the average return on the two investments amounts to 13%?
A. $9000 B. $13,000 C. $6500 D. $10,000
Mathematics
Solve the equation.-y = -14
A. -14 B. 14 C. 0 D. -1
Mathematics