Solve the system of equations.x - y + z = 8x + y + z = 6x + y - z = -12
A. (2, -1, 9)
B. (-2, -1, 9)
C. (2, -1, -9)
D. (-2, -1, -9)
Answer: B
Mathematics
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Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(s, t), y = h(s, t), z = k(s)
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
+ 
D. 
= 
Mathematics
Determine if the given polar coordinates represent the same point.(9, ?/6), (-9, 7?/6)
A. Yes B. No
Mathematics
Solve the equation by factoring.8y2 + 30y + 25 = 0
A. 
B. 
C. 
D. 
Mathematics
Determine whether the given information is consistent with a probability distribution.
?
; 
; 
?
A. Yes
B. No
Mathematics