If a circle is: x²+y²=r²
as {r} is the radius of the circle.
Find : sqrt((Δy)²+(Δx)²)
In the simple form.

Simplify the expression. enter the correct answer.

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y