Solve the system of equations by the substitution method. Check your solutions. For any dependent equations, write your answer in ordered pair form.
A. ?
B. {(x, 7 - x)}
C. {(0, 13)}
D. {(6, 7)}
Answer: A
Mathematics
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Find the conjugate of each complex number.6
A. 6 B. No conjugate. C. -6 D. 0
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Factor completely.r2+ 10r + 25
A. (r + 5)(r - 5) B. (r + 5)2 C. (r + 10)(r - 10) D. (r - 5)2
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Simplify.(-3xy)4
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