Solve the system of equations by substitution.
A. x = 0, y = 1; (0, 1)
B. x = 1, y = 1; (1, 1)
C. x = 1, y = 0; (1, 0)
D. x = 0, y = 0; (0, 0)
Answer: A
Mathematics
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Rationalize the denominator. 
A. 
B. 
C. 
D. 
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Find zw or 
as specified. Leave your answer in polar form.z = 1 + iw = 1 - 
iFind 
.
A. 
(cos 15° + i sin 15°)
B. 
(cos 105° + i sin 105°)
C. 
(cos 15° + i sin 15°)
D. 
(cos 105° + i sin 105°)
Mathematics
Find an equation in slope-intercept form for the nonvertical lines. Write the vertical lines in the form x = h.Passing through (1, -5) and (1, -9)
A. x = 1 B. y = 1 C. x = -5 D. y = -5
Mathematics
Identify the polygon as a triangle, quadrilateral, pentagon, hexagon, or octagon.
A. pentagon B. hegagon C. triangle D. quadrilateral
Mathematics