How to solve system of equations?
x+4y=4, -x-4y=-4

i got 0,0, which is infinitely many solutions, but it's asking me to find the solutions in regards to y. i found it through x so i'm confused.

Acarton of juice contains 64 ounces miss wilson bought six cartons of juice how many ounces of juice did she buy

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle?

The ideal weight of a nickel is 0.176 ounce. to check that there are 40 nickels in a roll, a bank weighs the roll and allows for an error of 0.015 ounce in total weight