A small pulley is 13 in. in diameter, and a larger one is 19 in. in diameter. How many rpm does the larger pulley make if the smaller one revolves at 570 rpm?
A. 820 rpm
B. 833.0769230769 rpm
C. 410 rpm
D. 390 rpm
E. 380 rpm
Answer: D
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Use the sum-of-two-cubes or the difference-of-two-cubes pattern to factor the following.1 - 27a 3
A. ( 1 - 3a )( 1 - 6a + 9a 2 ) B. ( 1 - 3a )( 1 - 3a + 9a 2 ) C. ( 1 - 3a )( 1 + 3a + 9a 2 ) D. ( 1 + 3a )( 1 + 3a + 9a 2 ) E. ( 1 - 3a )( 1 + 6a + 9a 2 )
Provide an appropriate response.A square with sides of length 20 is inscribed in a circle and circumscribed about another circle. What is the area of the larger circle?
A. 10? B. 200? C. 200 D. 100?
State the quadrant in which the point lies.(-2.4, 23)
A. Quadrant I B. Quadrant IV C. Quadrant III D. Quadrant II
Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.32 + 63 + 94 + . . . + 249
A. 
B. 
C. 
D. 