Find two equivalent expressions for the opposite of the polynomial.-7x3 + 5x2 + 14
A. -(-7x3 + 5x2 + 14); 7x3 - 5x2 - 14
B. -(-7x3 + 5x2 + 14); 7x3 - 5x2 + 14
C. -(-7x3 + 5x2 + 14); -7x3 + 5x2 + 14
D. -(-7x3 + 5x2 + 14); -7x3 - 5x2 - 14
Answer: A
Mathematics
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A.
B.
C.
D.
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Solve the problem.Jo and Nancy use a metal alloy that is 22% copper to make jewelry. How many ounces of a 18% alloy must be mixed with a 28% alloy to form 90 ounces of the desired alloy?
A. 56 ounces B. 36 ounces C. 41 ounces D. 54 ounces
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