Find the perimeter by using the appropriate formula, if 
and 
.
?
?
A. 18 ft
B. 30 ft
C. 9 ft
D. 15 ft
E. 36 ft
Answer: B
Mathematics
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Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the x-axis.x = 
ey2, y = 0, x = 0, y = 1
A. ?(e - 1)
B. 3?(e - 1)
C. 
(e - 1)
D. 
?e
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The graph of a function is given. Find the indicated function value.f(1)
A. 1 B. 0 C. -2 D. 2
Mathematics
Solve the system by the Gauss-Jordan method.
?
?
?
A. 
B. ?
C. ?
D. ?
E. inconsistent
Mathematics
Solve the problem.Suppose the cost per ton, f(x), to build an oil platform of x thousand tons is approximated by 
What is the cost per ton for x = 20?
A. $15,625.00 B. $15,000.00 C. $25.00 D. $484.50
Mathematics