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

Which statement is the best example of pseudoscience? (1 point) Scientists have observed many constellations in our universe. Molly thinks her astrologica
Christianity became the official religion of the Roman Empire under the reign of
Craig thorne works in a public accounting firm and hopes to eventually become a partner. the management of allnet company invites thorne to prepare a bid to aud
can someone please ecplain transformations for me including rotation.!!!!
how to change .365 to a percent
How do Jackson’s ideas reflect the interests of those who support him
What impact did English ideas and practices have on American government
True-False: Please select true or false(b^9)^3 = b^27A. TrueB. False
Can you revise this please asap !!!!!We have to think about the things the deceased wanted private on social media, yet, now they have no control. And reall
How is power related to energy