2x + 4y = 16
4x + 8y = -16 he chooses to eliminate the variable y

These system of equations have no solution.

Step-by-step explanation:

We need to solve the system of equations

by eliminating variable y

Let:

Multiply eq(1) by 2 and subtract both equations

As 0≠48

So, these system of equations have no solution.

18

Step-by-step explanation:

To find how many 0.3125 inch strips of wood Mariposa can get from a 5.625 inch wooden board, you would divide 5.625 by 0.3125.

5.625 / 0.3125 = 18

Mariposa can get 18 of those strips.