destinylit destinylit
  • 02-04-2017
  • Mathematics
contestada

What is the radius of a circle with the equation x2 + y2 – 14x + 10y = 250?

Respuesta :

kaveejethwa
kaveejethwa kaveejethwa
  • 02-04-2017
complete the square .

x^2-14x = (x-7)^2-(-7)^2 
             = (x-7)^2-49
y^2+10y = (x+5)^2-(5)^2
              =(x+5)^2-25
(x-7)^2+(y+5)^2-49-25=250
(x-7)^2+(y+5)^2=324
                         =sqrt 324
                         =18
Answer Link

Otras preguntas

the sum of three numbers is 26. the second number is twice the first and the third number is 6 more than the second.
To answer this question, read the following sentence: Because the animal shelter was filled with cats and dogs, the noise in the building was incredibly loud. W
Why was the election of 1800 a turning point in American history?
Completely factor the polynomial. 4x^2 20x 25
simplify –7 (–3)x 5 (–6)x
Write a polynomial that fits the description: A fifth-degree polynomial with leading coefficient 4
what is the definition of the term "public assistance"?
In today's workplace, just about everyone lies to take care of themselves
20% tip if the bill is 48.25
Stored food in plants is eaten by animals for energy. true false