Solve the system analytically.x - y + z = 7x + y + z = 3x + y - z = -5

A. {(1, 4, -2)}
B. ?
C. {(4, 1, -2)}
D. {(1, -2, 4)}


Answer: D

Mathematics

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Evaluate.(-8)3

A. -512 B. 512 C. -24 D. 24

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Solve the formula for the indicated variable.A = P(1 + nr), for r

A. r =  
B. r = 
C. r = 
D. r = 

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Provide an appropriate response.The total sales x ( in hundred thousands) for a music CD t months after the CD is released can be approximated by x = . Use logarithmic differentiation to find .

What will be an ideal response?

Mathematics

Find the asymptotes of the hyperbola. -  = 1

A. y = x, y = - x
B. y = x, y = - x
C. y = x, y = - x
D. y = x, y = - x

Mathematics