Find the solution to the system of equations, x + 3y = 7 and 2x + 4y = 8.
1. isolate x in the first equation: x = 7 − 3y2.
substitute the value for x into the second equation: 2(7 − 3y) + 4y = 83.
solve for y: 14 − 6y + 4y = 814 − 2y = 8−2y = −6y = 34.
substitute y into either original equation: x =
7 − 3(3)5.
write the solution as an ordered pair: ( , )

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.