Solve and check.x + 7 = 20
A. x = 27
B. x = 12
C. x = 140
D. x = 13
Answer: D
Mathematics
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Solve the problem.Write 
+ 
as a single iterated integral.
A. 
B. 
C. 
D. 
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Give the domain, range, or period, as requested.Period of y = 
sin x
A. 4
B. 
C. ?
D. 2?
Mathematics
Find the second-order partial derivative.Find gyy when g(x,y) = 
.
A. 
B. - 
C. 
D. - 
Mathematics
Simplify the exponential expression. Write any negative exponents as positive exponents. Assume all variables represent positive real numbers.x-2/7 ? x3/7
A. x-1/7 B. x6/7 C. x1/7 D. x7/6
Mathematics