Find the limit.
x
A. 0
B. 1
C. ?
D. 4
Answer: B
Mathematics
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Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them. 4x - 4y - z = -4 x - 5y + 4z = -4 3x + y + z = 24
A. x = 5, y = 4, z = 5 B. x = -5, y = 5, z = 10 C. x = 5, y = 5, z = 4 D. Inconsistent
Mathematics
Find the volume under the surface z = f(x,y) and above the rectangle with the given boundaries.z = 8x + 4y + 7; R = {(x, y): 0 ? x ? 1, 1 ? y ? 3}
A. 28 B. 38 C. 26 D. 36
Mathematics
Simplify the expression 
.
A. 3 B. 0 C. -9 D. -81 E. The expression cannot be simplified.
Mathematics
Use the even-odd properties to find the exact value of the expression. Do not use a calculator.sin 
A. - 
B. 
C. - 
D. 
Mathematics