Determine if the sequence is geometric. If the sequence is geometric, find the common ratio.40, 20, 10, 5, 2.5, . . .
A. yes, 2
B. yes, 0.5
C. yes, 2.5
D. no
Answer: B
Mathematics
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Find the volume of the indicated region.the region enclosed by the sphere 
and the cylinder 
A. 
(3? - 4)
B. 
(3? - 4)
C. 
(3? - 4)
D. 
(3? - 4)
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Solve the problem.How many three-digit numbers have the sum of their digits equal to 20?
A. 32 B. 36 C. 40 D. 30
Mathematics
Identify the group of terms as like or unlike.16a3, 16a9
A. Like B. Unlike
Mathematics
Find the probability.A bag contains 19 balls numbered 1 through 19. What is the probability of selecting a ball that has an even number?
A. 9
B. 
C. 
D. 
Mathematics