Rewrite the series using summation notation. Use 1 as the lower limit of summation.2(12) + 2(22) + . . . + 2(52)
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Factor by grouping.10x2 + 15xy - 4xy - 6y2
A. (5x + 2y)(2x + 3y) B. (10x - 2y)(x + 3y) C. (5x - 2)(2x + 3) D. (5x - 2y)(2x + 3y)
Mathematics
Solve the problem.The temperature at the South pole was -39°F at 8 am. At 3 pm, it was 10°F. By how many degrees did the temperature rise?
A. by 29°F B. by 49°F C. by -49°F D. by -29°F
Mathematics
Find the x- and y-intercepts of the graph of the equation. 
+ 
= 3
A. x-intercept: 9; y-intercept: 7 B. x-intercept: 12; y-intercept: 18 C. x-intercept: 4; y-intercept: 6 D. x-intercept: 18; y-intercept: 12
Mathematics
Determine the equation of the graph.
A. y = 2 csc x B. y = -csc 2x C. y = -sec 2x D. y = -2 sec x
Mathematics