Use front-end rounding to round each number. Then, add or subtract the rounded numbers to get an estimated answer. Finally, find the exact answer.estimate exact
A. Estimate: 12.7; exact: 12.7511
B. Estimate: 12.6; exact: 12.6511
C. Estimate: 12.6; exact: 12.7415
D. Estimate: 12.7; exact: 12.7415
Answer: A
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Use integration by parts to establish a reduction formula for the integral.
, n ? 1
A. 
= 
tann-2 x - 
B. 
= tann-1 x - 
C. 
= 
tann-1 x - 
D. 
= 
tann-1 x + 
Use Fleury's algorithm to find an Euler circuit for the graph beginning and ending at the indicated vertex. If no Euler circuit exists, state this.Using the following graph, find an Euler circuit that begins and ends with vertex A.
A. A ? B ? D ? C ? E ? D ? A B. A ? B ? D ? E ? C ? A C. A ? D ?B ? A ? C ? E ? D ? C ? A D. No Euler circuit exists.
Find the area of the region specified in polar coordinates.The region enclosed by the curve r = 7 - 5 cos ?
A. 
?
B. 
?
C. 
?
D. 74?
Use the given graph of the function.If f(4) = -10, write the corresponding ordered pair.
A. (4, -10) B. (-10, 4) C. (0, -10) D. (4, 0)