Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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At what points is the given function continuous?f(x, y) = tan (x + y)
A. All (x, y) ? (0, 0)
B. All (x, y) ? 
C. All (x, y)
D. All (x, y) such that x + y ? 
, where n is an integer
Mathematics
Find an equation of a parabola satisfying the given conditions.Find the equation of the parabola with vertex at the origin and axis along the x-axis if the parabola passes through the point 
A. x2 = 
y
B. y2 = 
x
C. x2 = 
y
D. y2 = 
x
Mathematics
Graph the pair of parametric equations with the aid of a graphing calculator.x = 4 sin t - sin 4t, y = 4 cos t - cos 4t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Mathematics
Find the equation of a line passing through the given points. Solve the equation for y.(-7, -6); slope = -2
A. x = -2y - 20 B. y = -2x + 20 C. y = -2x - 20 D. x = -2y + 20
Mathematics