Subtract.(-2x - 13) - (7x - 9)
A. -13x
B. -9x - 4
C. -9x- 22
D. 5x - 22
Answer: B
Mathematics
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Find the potential function f for the field F.F = 10x9y7z4i + 7x10y6z4j + 4x10y7z3k
A. f(x, y, z) = x30y21z12 + C
B. f(x, y, z) = 
C. f(x, y, z) = x10y7z4 + 7x10y6z4 + 4x10y7z3 + C
D. f(x, y, z) = x10y7z4 + C
Mathematics
Find the equation of the line described, and express your answer in the specified form.Perpendicular to the line x = 7; passes through the point (2, 8); standard form
A. y = 2 B. y = 8 C. x = 2 D. x = 8
Mathematics
Perform the indicated operation. Simplify if possible.
÷ 
A. 33
B. 
C. 
D. 
Mathematics
Factor the special product.4x2 + 20xy + 25y2
A. (2x + 5y)2 B. (2x + 5y)(2x - 5y) C. (4x + 1)(x + 25) D. (2x - 5y)2
Mathematics