bailey48923 bailey48923

21-08-2017
Mathematics

contestada

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

Respuesta :

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

13-10-2020

Answer:

2 units

Step-by-step explanation:

edgenuity 2020

hope this helps!

Answer Link

Otras preguntas

Please help! 20+ Points ~ In the following lattice bridge, ΔABC~ ΔXYZ. The ratio of lengths of a corresponding sides is 1:3. If AC = 8 feet, what is XZ? A.) 32

HELPP BRAINLIEST WILL B GIVEN TO RIGHT ANSSWERRR

please help me!!!!! i’m struggling so so much!

1. Mike's family went out for dinner. The meals including tax cost $69.57. If they leave a 15% tip... a. How much is the tip? b. How much money did they spend o

The position of an object is given as a function of time as x(t) = (3.00 m/s)t + (2.00 m/s2)t2. What is the displacement of the object between t = 1.00 s and t

8. What does Hereditary mean?

Question 9 of 10 Why are the powers of the federal government divided? O A. To protect minority rights against the will of the majority O B. To ensure a balance

need help 50 points.

Help plsssssssssssss

Who would you typically find wearing a hat in Roman society?