Simplify by combining like terms. Write the final answer with descending powers.4m2 - 8mn+ 3m2 + 6mn
A. 5mn
B. 7m2 - 2mn
C. 7m2 + 2mn
D. 7m2
Answer: B
Mathematics
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Find the margin of error for the survey results described. In a poll of 1757 adults, 30% said that they exercised regularly.Give your answer as a percentage to one decimal place.
A. 4.8% B. 2.4% C. 1.2% D. 0.1%
Mathematics
Express the number in scientific notation..000000054906
A. 5.4906 x 108 B. 5.4906 x 10-9 C. 5.4906 x 10-8 D. 5.4906 x 10-7
Mathematics
Find the greatest common divisor (GCD).30 and 36
A. 6 B. 1 C. 2 D. 3
Mathematics
What property of multiplication is illustrated in the diagram below?
A. Multiplication-by-zero property B. Associative property C. Multiplicative-identity property D. Commutative property
Mathematics