Use the formula for the sum of the first n terms of an arithmetic sequence to find the indicated sum.
A. 2100
B. 2247
C. 1890
D. 1932
Answer: D
Mathematics
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Find the average value of the function f over the given region.f(x, y) = 6x + 3y over the rectangle 0 ? x ? 5, 0 ? y ? 9.
A. 
B. 15
C. 
D. 
Mathematics
Provide an appropriate response.The diagonals of a 
intersect at their common midpoint.
A. trapezoid B. pentagon C. parallelogram D. rhombus
Mathematics
Solve the exponential equation.4(1 + 2x) = 64
A. -1 B. 4 C. 16 D. 1
Mathematics
Perform the indicated operations. Express the answer as a single polynomial in standard form.-2x(-5x - 4)
A. -5x2 + 8x B. 10x2 - 4x C. 10x2 + 8x D. 18x2
Mathematics