bailey48923
bailey48923 bailey48923
  • 21-08-2017
  • Mathematics
contestada

What is the radius of a circle whose equation is x2 + y2 + 8x – 6y + 21 = 0?

Respuesta :

jbmow
jbmow jbmow
  • 21-08-2017
x^2 + y^2 + 8x – 6y + 21 = 0
x^2 + 8x +16 + y^2 -6y +9 = -21 + 16 +9
(x+4)^2 + (y-3)^2 = 4
So the radius is 2
Answer Link
lydialiliu
lydialiliu lydialiliu
  • 13-10-2020

Answer:

2 units

Step-by-step explanation:

edgenuity 2020

hope this helps!

Answer Link

Otras preguntas

____________ is the practice of raising fish and other water-dwelling organisms for food A. Land Redamation B. Aquifier C. desertification  D. aquaculture
The word percent (%) means " divided by _________?"
A restaurant offers 12 types of entrees, 6 types of appetizers, and 4 types of rice.How many meals of appetizer, entree, and rice are there?
____________ is the practice of raising fish and other water-dwelling organisms for food A. Land Redamation B. Aquifier C. desertification  D. aquaculture
Which statement best describes the formation of an intrusive igneous rock? Here are the choices: A.Magma solidifies slowly, resulting in a coarse-grained textur
how did spartans train boys and girls so they could protect the city-state?
What was Memorial Day's called previously?
why was boise chosen for Idaho's capital
What contraction rhymes with the opposite of narrow
How many 6 digit number combinations are there?