Solve the system by substitution. x + 2y = 14-2x + 3y = 21
A. (1, 6)
B. (0, 7)
C. (-7, 0)
D. No solution
Answer: B
Mathematics
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Expand using the binomial theorem.(x + 3y)3
A. 3(x + 3y) B. x3 + 3x2y + 6xy + 9xy2 + 18y2 + 27y3 C. x3 + 27y3 D. x3 + 9x2y + 27xy2 + 27y3
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Multiply.5900 × 0.016
A. 92.512 B. 94.4 C. 9440 D. 944
Mathematics
Find the exact value of the expression if ? = 60°. Do not use a calculator.g(?) = cos ?Find [g(?)]2.
A. 
B. 
C. 
D. 
Mathematics
For the given parabola, give the coordinates of the vertex, the axis, the domain, and the range.y = (x + 9)2 - 5
A. vertex: (9, -5); axis: x = -9; domain: (-?, ?); range: (-?, ?) B. vertex: (-9, -5); axis: x = -9; domain: (-?, ?); range: [-5, ?) C. vertex: (-5, -9); axis: y = -9; domain: [-5, ?); range: (-?, ?) D. vertex: (9, -5); axis: x = 9; domain: (-?, ?); range: [-5, ?)
Mathematics