The equation for the circle below is x2 + y2 = 100. what is the length of the circle's radius?

Radius of the circle = 10

Step-by-step explanation:

The equation for the circle below is x2 + y2 = 100.

The equation of a circle in center radius form is

The given equation can be written as

from the above equation

r^2 = 100

take square on both sides

r=10

y > 1/3x

y < = -x + 4

hope this : )

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15