Ethel was installing a sprinkler system. She cut a 20 m length of plastic tubing into two pieces. The longer piece was 2 m longer than twice the shorter piece. Let l represent the length of the longer piece and let s represent the length of the shorter piece.

Choose the two equations that will create our system of equations for this story problem.

2s+2l=20

s=2l+2

l+s=20

l=2s+2

4 packs of water and 7 packs of candy bars

step-by-step explanation:

35x4=140

140/20=7

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

19.side- angle- side

20. angle- side- angle

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.