Solve the absolute value equation.
= 2
A. {6, 0}
B. ?
C. {-6, 6}
D. {-6, 0}
Answer: D
Mathematics
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The scalar function div(grad f) = ? ? ? f (also written ?2f) is called the Lapalacian, and the function f satisfying ?2f = 0 is said to be harmonic. ?2f = fxx + fyy + fzz. Find ?2f for the following function and decide if it is harmonic.f(x, y, z) = 4x2 - y2 - 3z2
A. harmonic B. not harmonic
Mathematics
Multiply.7(-9)
A. -63 B. -70 C. 70 D. 63
Mathematics
Solve the problem.Christina made a chart summarizing her shop's financial performance over the past three years. 
How much money was lost in the months described as "Poor"?
A. $400 B. $1200 C. $10,800 D. $3600
Mathematics
Solve the linear equation symbolically.-3(2p + 3) - 6 = -2(p + 4) + 1
A. -4 B. -2 C. 4 D. 2
Mathematics