peatieb
peatieb
09-07-2017
Mathematics
contestada
What is the radius of x^2 + y^2 -2x -4y -31 = 0
Respuesta :
bcalle
bcalle
09-07-2017
First we have to complete the square on both the x and y terms. Move the 31 to the right side.
x^2 - 2x + y^2 - 4y = 31
x^2 - 2x + 1 + y^2 - 4y + 4 = 31 + 1 + 4
(x - 1)^2 + (y - 2)^2 = 36
36 = r^2
r = 6
Answer Link
VER TODAS LAS RESPUESTAS ( 47+ )
Otras preguntas
Privacy settings allow account owners to decide who can A. search for them online. B. access their accounts. C. meet them in person. D. view their personal inf
What is the probability of not rolling a 5 on a standard cube?
What is 3.434856700 is standard form
Which of these is NOT considered publishing? A. presenting your research paper at a science fair B. keeping a personal account of your trip to New York City
What is the percent composition of magnesium (mg) in mgo?
Find the margin of sampling error to the nearest percent. p = 49%, n = 1200 a. 0.029% b. 0.042% c. 1% d. 3%
What does a 3 in front of a square root mean?
• theodore roosevelt's taking of the panama canal zone is an example of:
the ancient Greek city-state of Athens influenced later cultures by???
Which of these was the FIRST example of a written agreement for colonial self-government in the British colonies in North America? A) Fundamental Orders of Con
