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

A sprinkler set up to turn through a full circle to water the grass. The sprinkler turn through one fourth of a circle how many 1° angles does it turn throu

What is a common benefit of writing and the wheel? A. Both made mathematics possible. B. Both made trade easier. C. Both allowed for city planning.

The most effective way to carbohydrate load is to add the following types of foods do you diet a.cereals,grains,fruits and vegetables. b.dairy,fruits,and lean

What were the opportunities for females in Rome?

Which does not occur during meiosis

Which statement from the passage most clearly establishes characterization for Hrothgar? He knew an attack upon his high hall had been planned by the monster ev

In Harriet the spy what was Harriet's life ambition?

describe the process of sexual reproduction in flowering plants?

PLEASE HELP!!! I don't understand it

An outline reduces a ______ to_______ A)Sentence.... a word B) metropolitan area... a small city C) large amount of information..,, the essentials D) huge num