What is the radius for a circle whose equation is x2 + y2 = 64

Step-by-step explanation:

step one :

Given that the equation of the circle is described as

To correctly identify the center of the circle we have to place the equation in the standard form.

the standard equation for a circle is

step two :

let us re-write the given equation so that we can compare it with the general equation of circle

step three:

From this above equation in step two we can see that the circle has a radius of 8

yes

step-by-step explanation:

so of course you want to start by plugging the 5 in which goes to 7(5)+3(5)=50 because 7*5=35 and 3*5=15 and then add them together, then plug in the 5 to the other equation as well 9(5)+5=50 because 9*5= 45 and then add 5 and so yes they are equivalent.