The sum of 2x and 3y is 7.What is the sum of 8x and 12y?

28

Step-by-step explanation:

2x + 3y = 7

Now, since 8/2 is 4 and 12/3 is also 4, we can multiply the entire original equation by four in order to get the equation that we want

4(2x + 3y = 7)

8x + 12y = 28

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.