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. 
Answer: B
Mathematics
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Factor.x2 + 4xy - 117y2
A. (x + 13y)(x - 9y) B. (x - 13y)(x + y) C. (x - 13y)(x + 9y) D. (x - y)(x + 9y)
Mathematics
Write the first five terms of the arithmetic sequence with the given values.a2 = -7, a5 = 
A. - 
, -7, 
, 20, 
B. -7, 
, 20, 
, 40
C. -7, - 
, 2, 
, 11
D. - 
, -7, - 
, 2, 
Mathematics
Evaluate the expression.71
A. 7
B. 1
C. -7
D. 
Mathematics
Find the part.5000% of 128 universities
A. 6400 universities B. 640,000 universities C. 640 universities D. 64,000 universities
Mathematics