If possible, simplify the expression. If any variables exist, assume that they are positive.
+ 
A. 3x
B. 2
C. 
D. 3
Answer: D
Mathematics
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Find the divergence of the field F.F = -8x9i - 2y9j + 5z9k
A. -8x8 - 2y8 + 5z8 B. -72x8 - 18y8 + 45z8 C. 0 D. -45
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Subtract.48.060 - 23.574
A. 24.494 B. 24.496 C. 24.486 D. 25.000
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Graph the circle.(x - 4)2 + y2 = 9
A. 
B. 
C. 
D. 
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Convert the rectangular equation to a polar equation that expresses r in terms of ?.x2 + y2 = 25
A. r = 25 B. r = 5 C. r(cos ? + sin ?) = 5 D. r(cos ? + sin ?) = 25
Mathematics