samantha59223 samantha59223
  • 03-06-2019
  • Mathematics
contestada

the equation of a circle is x^2+y^2+6x-2y-15=0. find the center and radius of the circle.

Respuesta :

MathPhys
MathPhys MathPhys
  • 03-06-2019

Answer:

(-3, 1), 5

Step-by-step explanation:

x² + y² + 6x - 2y - 15 = 0

Rearrange:

x² + 6x + y² - 2y = 15

Complete the square:

x² + 6x + 9 + y² - 2y + 1 = 15 + 9 + 1

(x + 3)² + (y - 1)² = 25

Therefore, the center is (-3, 1) and the radius is 5.

Answer Link

Otras preguntas

Which organelle does the krebs cycle take place?
Multiply (u 7)(u-4) simplify your answer
how did india manage to exert such a significant influence on other cultures in the indian ocean basin during this era without ever establishing any long term c
Jordan is struggling with an addiction to painkillers. Which of these is a positive alternative to drug use that could help Jordan beat his addiction? A. Wat
What three things most directly affect carrying capacity??
Identificati si analizati substantivele din textele
1. What is the function of the noun clause in this sentence: "That you are ready to graduate is very clear to me." a. direct object b. subject c. indirect obje
Why should an experiment be replicable?
The british empire gained a footing in india through where?
How many times faster will oxygen gas diffuse than carbon dioxide