Solve the problem.Two toy cars race around a circular track (both go in the same direction). One car can travel around the track in 50 seconds. The other car travels around the track in 75 seconds. If both cars start from the same place, how long will it take for them to meet at the same place if they continue to race?
A. 3750 seconds
B. 150 seconds
C. 1875 seconds
D. 1250 seconds
Answer: B
Mathematics
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Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 
, y = 1, x = 0 to x = 
A. 
- ?
B. 
- 
C. 
- 
D. 
+ ?
Mathematics
Solve the problem.How many 6-digit numbers (i.e., between 100,000 and 999,999) have no 4's and no repeated digits?
A. 60,480 B. 531,441 C. 53,760 D. 17,640 E. none of these
Mathematics
Factor by grouping.x2 + dx + 2d + 2x
A. x(x + d) B. x(x + d) + 2 C. (x + 2)(x + d) D. x(x + 2)
Mathematics
Find the slope and the y-intercept.10x + y = 9
A. m = 
; 
B. m = - 
; 
C. m = -10; (0, 9)
D. m = 10; (0, 9)
Mathematics