Tell whether the statement is true or false.Let A = {7, 8, 9, 10, 11, 12}, B = {9, 11, 13}, C = {7, 8, 10, 12}, D = {7, 12}, and 
? ? D
A. True
B. False
Answer: A
Mathematics
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Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. 49? B. 98? C. 7? D. 196?
Mathematics
Find the standard deviation.49, 19, 34, 26, 10, 47, 72
A. 378.8 B. 34 C. 19.5 D. 36.7
Mathematics
Translate the problem to a system of equations, then solve using matrices.Anne and Nancy use a metal alloy that is 27.6% copper to make jewelry. How many ounces of a 24% alloy must be mixed with a 30% alloy to form 125 ounces of the desired alloy?
A. 80 ounces B. 52 ounces C. 50 ounces D. 75 ounces
Mathematics
Simplify, where possible.27m - 8 - 3m - 4
A. 24m - 12 B. 24m - 4 C. 24m - 8n - 4 D. -24m - 12
Mathematics