markjiron466 markjiron466
  • 13-01-2018
  • Mathematics
contestada

X2 + y2 + 4x - 2y = -1 is the equation of a circle in the xy-plane. what is the radius of the circle

Respuesta :

lesliekolleroxrkcf
lesliekolleroxrkcf lesliekolleroxrkcf
  • 13-01-2018
after completing the square twice we get

x²+4x+4 + y²-2y+1 = -1+4+1=4 so radius = √4=2
Answer Link

Otras preguntas

Select the two values of x that are roots of this equation 2x^2+1=5x​
What function or feature of a camera can help you take a self-portrait? Self-flash Self-aperture Self-timer Self-shutter
What advice would you give someone with the following issues?
The strategy in which you periodically look away from the text and ask yourself about the material is called the a. Review technique c. Questioning strategy
2 3/4- (-1/4) Anyone have the answer ty
Which of the following describes the image formed by a plane mirror? virtual and erect real and inverted real and erect virtual and inverted
The pressure exerted by a gas container depends on
The axis of symmetry for the graph of the function f(x) = 2x2 + 3x + 10 is x=6. What is the value of b? Ο Ο Ο Ο 3
Find the missing side lengths 2V3 45 T A) x=2 6, y=23 B) x=26, y=4 9 x=6V2, y=4
why is etiopia a cultually diverse country?​