The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r = 2(sin ? - cos ?)
A. x2 + y2 = 2x - 2y
B. 2x2 + 2y2 = x - y
C. x2 + y2 = 2y - 2x
D. 2x2 + 2y2 = y - x
Answer: C
Mathematics
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Subtract in the indicated base.11,0002 - 1112
A. 10,0112 B. 11,0012 C. 10,0012 D. 10,0002
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Solve the equation. Use the multiplication axiom.- 
= -9
A. {-12} B. {-27} C. {12} D. {27}
Mathematics
Verify that each equation is an identity.cot(2?)= 
What will be an ideal response?
Mathematics
Eliminate the parameter. Write the resulting equation in standard form.An ellipse: x = 3 + 4 cos t, y = 4 + 6 sin t
A. (x - 3)2 + (y - 4)2 = 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics