3. What should be done to these equations to solve the system of equations by elimination? 4x+ y = 15
3x - 2y = -8

A. Divide the second equation by 3.

B. Multiply the second equation by 2.

C. Multiply the first equation by 2.

D. Divide the first equation by 4.

B

Step-by-step explanation:

If we multiply the 1st equation by 2

the y value of the 1st equation will get eliminated when added with the 2nd's.

and thus we'll be left with only X values and constants that are simple to deal with.

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.