Find the sum Sn of the first n terms of the geometric sequence.4, 
, 
, 
, . . . ; n = 8
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Given that the pair of triangles is similar, find the length of the side labeled n.
A. 20 B. 25 C. 12 D. 19
Mathematics
Simplify the difference.(3z + 5) - (z + 4)
A. 3z + 1 B. 2z + 9 C. 2z + 1 D. 3z + 9
Mathematics
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos(2?) = 
, 0 < ? < 
Find sin ?.
A. 
B. 
C. 
D. 
Mathematics
Find the median for the data given.Number of phone calls made each day: 8, 2, 26, 15, 23, 43, 40, 30
A. 23 calls B. 23.5 calls C. 26 calls D. 24.5 calls
Mathematics