Determine if matrix A is invertible.A = 
A. Not invertible
B. Invertible
Answer: B
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Expand the expression using the Binomial Theorem.(x - 9y)5
A. x5 - 45x4y + 810x3y2 - 7290x2y3 + 32,805xy4 - 59,049y5 B. x5 - 45x4y + 810x3y2 - 7290x2y3 + 32,805xy4 - 59,049 C. x5 - 45x4y + 1620x3y2 - 14,580x2y3 + 32,805xy4 - 9y5 D. x5 - 45x4y + 1620x3y2 - 14,580x2y3 + 32,805xy4 - 59,049y5
Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation.r = 4 cos ?
A. 
x2 + (y - 2)2 = 4; circle, radius 2,
center at (0, 2) in rectangular coordinates
B. 
(x + 2)2 + y2 = 4; circle, radius 2,
center at (-2, 0) in rectangular coordinates
C. 
x2 + (y + 2)2 = 4; circle, radius 2,
center at (0, -2) in rectangular coordinates
D. 
(x - 2)2 + y2 = 4; circle, radius 2,
center at (2, 0) in rectangular coordinates
Identify the quadrant for the angle ? satisfying the following conditions.sin ? > 0 and cos ? > 0
A. Quadrant IV B. Quadrant II C. Quadrant III D. Quadrant I
Simplify the expression. Include absolute value bars where necessary.
A. x + 1
B. 
+ 1
C. ±x + 1
D. 