Find the equation of the axis of symmetry of the parabola.y = 
x2
A. x = - 
B. x = 0
C. x = 
D. y = 0
Answer: B
Mathematics
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Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. x + y + z = 92x - 3y + 4z = 7
A. {(
z + 
, - 
z + 
, z)}
B. {(- 
z + 
, 
z + 
, z)}
C. {(
, 
, 1)}
D. ?
Mathematics
Solve for the specified variable.P(1 + rt) = A, for r
A. P - tA
B. 
C. 
D. 
Mathematics
Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.6x - 2(5y - 9)
A. 6x - 10y - 9 B. 6x - 10y - 18 C. 6x - 10y + 18 D. 6x - 10y + 9
Mathematics
Simplify the expression using positive exponents only.6-6/7 ? 6-1/7
A. -68/7
B. -6
C. 
D. 
Mathematics