Simplify. Include the absolute value symbol if necessary. If the answer is not a real number, state so.
A. 49x2
B. not a real number
C. 7x2
D. 18x2
Answer: C
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Add or subtract as indicated.(8x3 - 3x2 - 9x - 5) - (2x3 + 8x2 - 5x + 6)
A. 10x3 + 5x2 - 14x + 1 B. 6x3 - 11x2 - 4x - 11 C. 6x3 + 5x2 - 14x + 1 D. 10x3 + 5x2 - 14x - 11
Find the coordinates of the centroid of the given figure.The solid generated by revolving the first-quadrant region under the curve of 
about the y-axis
A. 
B. 
C. 
D. 
Find the number of elements in the sample space of the experiment.Selecting a marble from a bag containing 6 marbles and selecting a chip from a bag containing 7 chips.
A. 49 B. 42 C. 36 D. 13
Use the properties of parallel lines to solve the problem.
is parallel to 
. Find the measure of each numbered angle.
A. ?2 ? ?3, both are 69°; ?1 ? ?ABE, both are 111°. B. ?1 ? ?2, both are 111°; ?3 ? ?ABE, both are 69°. C. ?1 ? ?2, both are 69°; ?3 ? ?ABE, both are 111°. D. ?1 ? ?3, both are 69°; ?2 ? ?ABE, both are 111°.