Jacob has $1.20 worth of nickels and dimes. He has twice as many nickels as dimes. Graphically solve a system of equations in order to determine the number of nickels, x, x, and the number of dimes, y, y, that Jacob has.

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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.

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step-by-step explanation: