Solve the system of equations.
x + 4y - z = 2
2x - 8y + z = -14
-2x + 8y -3z = 10

3/4 = c/36 i need with this fraction proble.

Fran has 7 sheets of paper for a coloring project. if she only uses 1/3of a sheet of paper per draing how many drawings can ahe make?

Atoss of a 20-sided die is equally likely to be any integer between 1 and 20 inclusive. what is the variance? provide your answer to two decimal points.