Solve the system by the substitution method or the addition method.
A. (4, -5)
B. (12, -6)
C. (5, 4)
D. (12, 3)
Answer: A
Mathematics
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Solve the equation 
for ?y. Round your answers to two decimal places, if necessary.
?
A. 
or 
B. 
or 
C. 
or 
D. None of the above.
Mathematics
Provide an appropriate response.Find the direction in which the function is increasing most rapidly at the point P0.f(x, y, z) = xy - ln(z), P0(1, 1, 1)
A. 
( i + j - k)
B. 
( i + j - k)
C. 
( i + j - k)
D. 
( i - j + k)
Mathematics
Find the average inventory.
A. $31,645.00 B. $63,290.00 C. $21,472.00 D. $21,096.67
Mathematics
Use the fundamental identities and appropriate algebraic operations to simplify the expression.
+ cos x sec x
A. cot2 x B. csc2 x C. csc x D. sec2 x
Mathematics