Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation. +  +  + . . . + 

A.
B.
C.
D.


Answer: A

Mathematics

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The double integral gives the mass of a lamina R. Determine the density ?, the mass, and the center of mass.

A. k; 21k?; 
B. Density is proportional to distance from the origin; 21k?; 
C. k; 21k?; 
D. Density is proportional to distance from the origin; 21k?; 

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Multiply.(-2)(-4)(-7)(-9)(-11)

A. 5544 B. -33 C. 33 D. -5544

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Solve the problem.Find the amount of money in an account after 12 years if $4100 is deposited at 6% annual interest compounded quarterly.

A. $8408.08 B. $8334.46 C. $8250.01 D. $8378.26

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Write the binomial expansion of the expression.(3m - 2n)4

A. 81m4 - 3456m3n - 1296m2n2 - 96mn3 - 16n4 B. 81m4 - 3456m3n + 1296m2n2 - 96mn3 + 16n4 C. 81m4 - 216m3n - 216m2n2 - 96mn3 - 16n4 D. 81m4 - 216m3n + 216m2n2 - 96mn3 + 16n4

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