Rewrite the equation in standard form. Find the center and radius of the circle.x2 + y2 - 20y + 99 = 0
A. x2 + (y - 10)2 = 1
center (0, 10), r = 1
B. x2 + (y - 10)2 = 1
center (0, -10), r = 1
C. (x - 10)2 + y2 = 1
center (10, 0), r = 1
D. x2 + (y + 10)2 = 1
center (0, -10), r = 1
Answer: A
Mathematics
You might also like to view...
Perform the indicated operation and simplify. Write the answer in the form a + bi.(8 - 2i)(2 + 3i)
A. 22 - 20i B. -6i2 + 20i + 16 C. 22 + 20i D. 10 - 28i
Mathematics
Add.Add 1.2 and 1.67.
A. 2.87 B. 2.69 C. 2.267 D. 1.79
Mathematics
Factor completely. If the polynomial is prime, state so.x + 125x4
A. x(1 + 5x)(1 - 5x + 25x2) B. x(1 - 5x)(1 + 5x + 25x2) C. prime D. x(1 + 5x)(1 + 5x + 25x2)
Mathematics
Perform the indicated operation(s). Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Mathematics