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

What are the adavantages of blue revolution?
wants to create a path using pebbles. She has 8 basand each bag covers an area of about 6 square feet. If sheto make the path 2 feet wide, about how long can sh
find the sum of 3 consecutive even integers if the greatest odd integer is 2x​
Please help me with these five problems dont understand them
Find the area please don’t lie to me
I’m young Goodman brown Hawthorne reveals his feelings about his Puritan ancestors when
A rectangle has a length that is one foot less than twice its width. it the area of the rectangle is 91 square feet then which of the following equations could
Jill wrote the number 40 if her rule is add 7 whats is the fourth nymber in jills pattern how many can you check you answer
Conservatives believe that, when the government regulates the economy, it makes the economy A. Less Efficient B. Stable C. Stronger D. Friendlier to the Poor
Simplify the expression. 7x + 7 +5(x + 3) + 3