Find the area of the region specified by the integral(s).
A. 1
B. 5
C. 5
D. 10
Answer: B
Mathematics
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Classify as true or false.If a and b are even, then GCD(a, b) must be 2.
A. True B. False
Mathematics
Solve the problem using a system of equations.Anne and Nancy use a metal alloy that is 18.2% copper to make jewelry. How many ounces of a 17% alloy must be mixed with a 19% alloy to form 110 ounces of the desired alloy?
A. 46 oz B. 44 oz C. 71 oz D. 66 oz
Mathematics
Evaluate the expression.(g ? f)(c) when f(x) = -6x + 8 and g(x) = 2x + 5.
A. 12c + 21 B. -12c - 11 C. -12c + 38 D. -12c + 21
Mathematics
Find the area of the surface obtained by rotating the circle 
about the line y = 3. Select the correct answer.
Mathematics