Solve by using the square root property.3x2 - 15 = 0
A. x = 
B. x = ± 
C. x = ± 
D. x = ± 
Answer: D
Mathematics
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Factor completely.x2 + 13xy + 42y2
A. x(x + 13y + 42y2) B. (x - 6y)(x - 7y) C. (x + 6y)(x + 7y) D. (x + 6y)(x - 7y)
Mathematics
Each line contains the given points. Find the slope of each line to determine if the lines are parallel, perpendicular, or neither.L1: (-5, 10) and (-7, 2)L2: (-1, 2) and (0, -2)
A. perpendicular B. neither C. parallel
Mathematics
Find the derivative of the function.
?
?
A. 
B. 
C. 
D. 
Mathematics
The cross section of a drain is a trapezoid, as shown in the figure. The sides and the bottom of the trapezoid are each ?a = 9 ft long. Determine the angle 
so that the drain will have a maximal cross-sectional area.
?
?
__________°
Fill in the blank(s) with the appropriate word(s).
Mathematics