Solve.
+ 
= 4
A. 
, -2
B. -2
C. 2, -2
D. 0
Answer: B
Mathematics
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Simplify the expression, and combine like terms.7(5x2 + 9y) - (4x2 - 3y)
A. 39x2 + 66y B. 31x2 + 60y C. 39x2 + 12y D. 31x2 + 66y
Mathematics
Solve the problem.Find the derivative of the function 
at the point 
in the direction in which the function decreases most rapidly.
A. - 
B. - 
C. - 
D. - 
Mathematics
Provide an appropriate response.In the ellipse 
+ 
= 1, what is the equation of the horizontal axis of symmetry? The vertical axis of symmetry?
A. Horizontal: y = -1; Vertical: x = 8 B. Horizontal: y = 1; Vertical: x = 8 C. Horizontal: y = 1; Vertical: x = -8 D. Horizontal: y = 8; Vertical: x = -1
Mathematics
Find the area.
A. 162 m2 B. 36 m2 C. 72 m2 D. 324 m2
Mathematics