Evaluate.18.72 - 29.14
A. -47.86
B. -10.42
C. 47.86
D. 10.42
Answer: B
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Find the volume of the described solid.The base of a solid is the region between the curve y = 6cos x and the x-axis from x = 0 to x = ?/2. The cross sections perpendicular to the x-axis are isosceles right triangles with one leg on the base of the solid.
A. 
?
B. 9?
C. 
?
D. 3?
For the given polar equation, write an equivalent rectangular equation.r = 2(sin ? - cos ?)
A. x2 + y2 = 2x - 2y B. x2 + y2 = 2y - 2x C. 2x2 + 2y2 = x - y D. 2x2 + 2y2 = y - x
Find the first term, the common difference, and give a recursive formula for the arithmetic sequence.8th term is 60; 14th term is 114
A. a1 = -3, d = 9, an = an-1 - 9 B. a1 = -12, d = 9, an = an-1 - 9 C. a1 = -12, d = 9, an = an-1 + 9 D. a1 = -3, d = 9, an = an-1 + 9
Find the median of the set of scores.
96, 54, 66, 78, 62, 80, 54 a. 78 b. 70 c. 54 d. 66 e. 42