Use Cramer's rule to solve the linear system.2x + 2y = 322x - 3y = -13
A. (-7, -9)
B. (7, 9)
C. (-9, 7)
D. (9, 7)
Answer: B
Mathematics
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Use a calculator to approximate the square root. Round to three decimal places.
A. 1.376 B. 1.389 C. 1 D. 1.404
Mathematics
Perform the indicated operations and write the answer in the form 
where a and b are real numbers.(-7 - 6i)(-7 + 6i)
A. 85 B. 49 - 36i2 C. 49 + 36i2 D. 13
Mathematics
Write a percent proportion that could be used to answer the question. Do not solve. 26 hours is what percent of 76 hours?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics
Divide. Express the quotient in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics