Find the value of the expression using the given values.
?x = 15, y = 20
A. 25
B. 13
C. 24
D. 18
Answer: A
Mathematics
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Use the given transformation to evaluate the integral. src="https://sciemce.com/media/4/ppg__10615191636__f1q28g7.jpg" alt="" style="vertical-align: -4.0px;" />
Rwhere R is the trapezoid with vertices at 
A. 
B. 
C. 
D. 
Mathematics
Find the volume of the geometric solid. If needed, use 3.14 as an approximation for ? and round the answer to the nearest tenth.Circular cylinder: r = 9 in., h = 15 in.
A. 3815.1 in.3 B. 7630.2 in.3 C. 423.9 in.3 D. 847.8 in.3
Mathematics
The graph shows the region of feasible solutions. Find the maximum or minimum value, as specified, of the objective function.objective function = 3x + y; maximum
A. 25 B. 7 C. 29 D. 39
Mathematics
Multiply.3(5)(6 ? z)
A. 80z B. 90z C. 90 D. 190z
Mathematics