Solve using matrices.3x + 4y = 123x + 6y = 24

A. (6, 4)
B. (-4, 6)
C. (-4, -6)
D. (6, -4)


Answer: B

Mathematics

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Write the number in simplest form, without a negative radicand.2 + 

A. 2 - 5i B. -3 C. 2 + 5i D. 2 + i

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Solve by completing the square.        

A.
B.
C.
D. none of these

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Solve the problem.Imelda inherited $20,000 and invested it in a mutual fund for two years. At the end of the two years, her investment had grown to $23,328. Find the annual interest rate that would yield this amount of money, if the interest is compounded annually. Use the formula,  to solve.

A. 0.08% B. 80% C. 8% D. 0.8%

Mathematics