Divide and, if possible, simplify. Assume all variables represent positive numbers.
A. 2x 
B. 6 
C. 15 
D. 2 
Answer: D
Mathematics
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Transform the equation by rotating the axes through the given angle. Identify the curve.x2 - xy + y2 = 5; ? = 45°
A. 
+ 
= 1; ellipse
B. x'2 + y'2 = 25; ellipse
C. 
+ 
= 1; ellipse
D. x'2 - y'2 = 5; hyperbola
Mathematics
Perform the indicated operation. Write the result in the form a + bi.(5 + 4i) - (-7 + i)
A. -2 + 5i B. 12 + 3i C. 12 - 3i D. -12 - 3i
Mathematics
Write the equation of the circle with the given center and radius.center (3, 0), radius 7
A. (x - 3)2 + y2 = 49 B. (x + 3)2 + y2 = 49 C. x2 + (y + 3)2 = 7 D. x2 + (y - 3)2 = 7
Mathematics
Determine whether the graph shown is the graph of a polynomial function.
A. not a polynomial function B. polynomial function
Mathematics