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

I WILL MAKE WHOEVER ANSWERS THIS CORRECTLY THE BRAINLIEST :D Rei is barricading a door to stop a horde of zombies. She stacks boxes of books on a table in front
y Find the slope of the line that passes through the points (2,-5) and (7.1). x 2 7 y -5 1 on 4 Step 1: Choose (X1.71). 2 -4 -2 2 4 ON 8 -2 -4 -6 Check
Cell membranes are made of
The triangle is: scalene and obtuse. isosceles and acute. equilateral and acute. None of these choices are correct.
In a perpetual inventory system, the amount of the discount allowed for paying for merchandise purchased within the discount period is credited to Inventory. Pu
What is the tangent ratio of side b
What convinced Germany to sign an armistice ending World War I?
Describe and explain how the movement and arrangement of the particles in a block of ice change as the ice melts to form liquid water. In your answer, include i
Sam's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Sam $5.70 per pound, and type B coffee costs $4.15 per pound. This
Pleassssssseeeeeee heeelllllppppppppp