Solve the system by elimination.-7x - 5y = 50- 
x + y = 0
A. {(3, -5)}
B. {(-5, -3)}
C. {(5, -3)}
D. {(-3, -5)}
Answer: B
Mathematics
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Sketch the surface z = f(x,y).f(x, y) = 4x2 + 4y2 + 2
A. 
B. 
C. 
D. 
Mathematics
Determine the types of symmetry that the quilt pattern below has (line, turn, point), if any.
A. This quilt square has no symmetry. B. This quilt square has 2 lines of symmetry, 180° turn symmetry, and point symmetry. C. This quilt square has 2 lines of symmetry, 90° and 270° turn symmetry. D. This quilt square has 4 lines of symmetry, 90°, 180°, and 270° turn symmetry, and point symmetry.
Mathematics
Provide an appropriate response.When looking at the problem "32 is 16% of what number?" 32 is the percentage.
A. True B. False
Mathematics
Solve the equation.
+ 
= 4
A. {0}
B. {
, -2}
C. {-2}
D. {2, -2}
Mathematics