Evaluate the integral by making a substitution and then using a table of integrals.  

A. 9 sin-1 -   + C
B.   - 3 ln  + C
C. 9 sin-1 -   + C
D. 9 sin-1 + x  + C


Answer: A

Mathematics

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Perform the indicated operation, being careful not to leave more than 59 seconds or 59 minutes in your answers.

A. 6 hours, 76 minutes, 26 seconds B. 7 hours, 16 minutes, 26 seconds C. 7 hours, 17 minutes, 26 seconds D. 6 hours, 17 minutes, 26 seconds

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Find an equation for the surface obtained by rotating the parabola y=2x² about the y-axis.

What will be an ideal response?

Mathematics

Provide an appropriate response.Which of the following pairs of parametric equations will graph a semicircle?

A. x = cos t, y = sin t, 0 ? t ? 
B. x = cos t, y = sin t, 0 ? t ? ?
C. x = cos 2t, y = sin 2t, 0 ? t ? ?
D. x = cos t, y = sin t, 0 ? t ? 4?

Mathematics

Subtract.53.82 - 34

A. 19.82 B. 19.92 C. 87.82 D. 20.32

Mathematics