Find the radius of the circle if the center is at (1, 2) and the point (-3, 4) lies on the
circle.

The distance between these two points is the radius of the circle. The pyth. theorem is useful in solving this problem. You need to construct a right triangle first where the hypotenuse is the length between the points.

The two other side lengths: 1-(-3)=4 and 4-2=2

Now let us use the pyth. theorem to find the hypotenuse:

x^2=4^2+2^2

x^2=20

x=√20

x=2√5

radius = 2√5

i think it would be 42cm

you ignore the remainder, therefore the answer is y = x+2

step-by-step explanation:

you have to divide the denominator by the numerator. you can use synthetic division or long division.

[-5] .     1 .     7 .     11

x + 2 + 1/x+5