Solve. Graph the solution on a number line, and express it in interval notation.-6x - 12 ? -7x - 1
A. x < -6, (-?, -6)
B. x > -6, (-6, ?)
C. x ? 11, (-?, 11]
D. x ? 11, [11, ?)
Answer: D
Mathematics
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The lengths of two vectors a and b, and the angle ? between them, are given. Find the length of their cross product, |axb|.
What will be an ideal response?
Mathematics
Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Mathematics
Find all the first order partial derivatives for the following function.f(x, y) = ln 
A. fx(x, y) = - 
; fy(x, y) = 
B. fx(x, y) = 
; fy(x, y) = 
C. fx(x, y) = -ln 
; fy(x, y) = ln 
D. fx(x, y) = -ln
; fy(x, y) = ln 
Mathematics
Multiply or divide as indicated. Write the answer in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics