Find the magnitude of the vector.
= 
A. 
B. - 6
C. -
D. 122
Answer: A
Mathematics
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Solve the system by graphing. 3x - 2y = 4-6x + 4y = 7
A. No solution B. Infinite number of solutions C. (1, 2) D. (2, 1)
Mathematics
Set up an integral for the length of the curve.y4 + 4y = 4x - 1, 1 ? y ? 2
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.If f(x, y) = (4000ey)/(1 + 
/2) represents the population density of a planar region on Earth, where x and y are measured in miles, find the number of people within the rectangle -6 ? x ? 6 and -3 ? y ? 0.
A. 8000(1 - e-3) ln 
? 15,807
B. 8000(1 - e-3) ln 4 ? 10,538
C. 4000(1 - e-3) ln 4 ? 5269
D. 16,000(1 - e-3) ln 4 ? 21,076
Mathematics
Find the area of the region.
7 mi
A. 52 sq mi B. 28 sq mi C. 45 sq mi D. 49 sq mi
Mathematics