Evaluate.
A. 85,140
B. 1980
C. 135
D. 3,575,880
Answer: A
Mathematics
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Find the exact value of each expression, if it is defined.
 figure 1.png)
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Solve the problem.The area of a triangle with vertices (x1, y1), (x2, y2), and (x3, y3) is 
,where the symbol ± indicates that the appropriate sign should be chosen to yield a positive area. Use this formula to find the area of a triangle whose vertices are (2, 10), (6, -4), and (-3, -9).
A. 2 B. 73 C. 1 D. 146
Mathematics
Write the first four terms of the sequence whose general term is given.an = 
A. 2, 1, 
, 
B. -2, - 1, 
, 
C. -2, 1, 
, 
D. 2, - 1, 
, 
Mathematics
Write a formula for the general term (the nth term) of the geometric sequence.-2, -6, -18, -54, -162, . . .
A. an = -2(3)n B. an = -2(3n) C. an = a1 + 3n D. an = -2(3)n - 1
Mathematics