Classify the triangle as acute, right, or obtuse and as equilateral, isosceles, or scalene.
A. Obtuse, equilateral
B. Obtuse, scalene
C. Right, scalene
D. Acute, isosceles
Answer: D
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Solve the problem by integration.Find the volume generated by revolving the first-quadrant area bounded by 
and x = 5 about the y-axis.
A. 
? ln 12,600
B. 6? ln 
C. 3? ln 12,600
D. 3? ln 
Find the amplitude and range of the function.y = 2 cos x
A. 
; [-2, 2]
B. 2; [-2, 2]
C. ?; [-2, 2]
D. -2; [-2, 2]
Factor by grouping.10x2 - 4x + 15x - 6
A. (2x + 3)(5x - 2) B. (10x - 3)(x + 2) C. (10x + 3)(x - 2) D. (2x - 3)(5x + 2)
Solve the problem.If an object is dropped from a tower, then the velocity, V (in feet per second), of the object after t seconds can be obtained by multiplying t by 32 and adding 10 to the result. Find V as a linear function of t, and use this function to evaluate V(7.9), the velocity of the object at time 
A. V(7.9) = 264.1 feet per second B. V(7.9) = 262.8 feet per second C. V(7.9) = 262.1 feet per second D. V(7.9) = 260.8 feet per second