Use the distance formula and the Pythagorean theorem to determine whether the set of points could be vertices of a right triangle.(-10, 8), (1, -3), (3, -1)
A. Yes
B. No
Answer: A
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Find the mean.99, 105, 89, 101, 86
A. 96 B. 99 C. 80 D. 105
Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.04 B. 0.02 C. -0.4 D. 0.3
Solve the problem.The angle of elevation ? of the sun in the sky at any latitude L is calculated with the formula 
? is the number of radians that the Earth has rotated through since noon when ? = 0. D is the declination of the sun. Westville has latitude 
Find the angle of elevation ? in degrees of the sun at 3 PM on February 29, 2012, where at that time 
and 
alt="" style="vertical-align: -4.0px;" /> A. 28.6° B. 0.5° C. 27.4° D. 9.8°
Identify where f is increasing or where f is decreasing, as indicated. Round your answer to two decimal places when appropriate.f(x) = x3 - 4x - 7; decreasing
A. (-?, -1.15] ? [1.15, ?) B. [-1.15, 1.15] C. [-2.00, 2.00] D. (-?, -1.15]