Perform the indicated operations and write the result in standard form.
+ 
A. -12i
B. -12
C. 12i
D. 32i
Answer: C
Mathematics
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Find the GCF of 12 and 15.
A. 5 B. 3 C. 4 D. 1
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Find the gradient vector field of the scalar function f. (That is, find the conservative vector field F for the potential function f of F.)
f(x, y, z) = 8xy² + 2yz³
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Solve.The rectangle has width 7x3 feet and length 8x5 feet. Find its area as an expression in x. 
8x5 feet
A. 15x8 sq ft B. 56x8 sq ft C. 15x15 sq ft D. 56x15 sq ft
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Evaluate the logarithm using the change-of-base formula. Round your result to three decimal places. ? log15 1,500 ?
A. 5.701 B. 3.701 C. 2.701 D. 6.701 E. 4.701
Mathematics