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

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

How many states have their home states in India?

Draw a pyramid of energy to show how energy flows through the antarctic food web. Use the pyramid on page 231 as a model. Include five levels of consumers in yo

When would we use "Je vous présente

Anna is looking for a new part-time job. They respond to a classified ad for a position that pays $62.4K. What would their bi-weekly salary be to the nearest ce

How do I do science it just don’t show a true display of skill

Ella es Marta y a ella 1. ________ gusta jugar al tenis. ¿A ti 2. ________ gusta jugar al fútbol? No, no me gusta jugar fútbol. ¿A ti 3. ________ gusta practica

spend did your where you free time

Solve for x: −3x + 3 −1 x −3

HELP ME ASAP PLEASEEEEE Delta waves are the type of brain waves associated with alertness T or F

An open-end mercury manometer is connected to a low-pressure pipeline that supplies a gas to a laboratory. Because paint was spilled on the arm connected to the