Solve the system of equations using gaussian elimination method.
x + y + z - t = 4
2x - y +2z +3t = -8
-x + 2y - 3z + t = 4
3x + y + 2z - 3t = 9

The green family is a family of six people. they have used 4,885.78 gallons of water so far this month. they cannot exceed 9,750.05 gallons per month during drought season. write an inequality to show how much water just one member of the family can use for the remainder of the month, assuming each family member uses the same amount of water every month.

Which of these tools or constructions is used to inscribe a hexagon inside a circle?

Select the correct answer from each drop-down menu. the length of a rectangle is 5 inches more than its width. the area of the rectangle is 50 square inches. the quadratic equation that represents this situation is the length of the rectangle is inches.