Solve by the substitution method.
= 59x = 10 + 12y
A. 
B. ?
C. {(x, y)|
= 5}
D. 
Answer: D
Mathematics
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Find all the first order partial derivatives for the following function.f(x, y) = (-3x2 - 9y2)3/2
A. fx(x, y) = -9
; fy(x, y) = -27y
B. fx(x, y) = -27x
; fy(x, y) = -9y
C. fx(x, y) = -9y
; fy(x, y) = -27x
D. fx(x, y) = -27y
; fy(x, y) = -9x
Mathematics
Find the missing quantities. Round rates to the nearest whole percent and money to the nearest cent.
A. % Markdown = 86% $ Markdown = $91.84 B. % Markdown = 14% $ Markdown = $78.98 C. % Markdown = 14% $ Markdown = $91.84 D. % Markdown = 86% $ Markdown = $485.18
Mathematics
Factor when possible.25x2 - 49
A. (5x + 7)2 B. (5x + 7)(5x - 7) C. (5x - 7)2 D. prime
Mathematics
Determine the number that can be used in place of the question mark to make the equation true.2? = 4
A. 1
B. -2
C. 
D. 2
Mathematics