Solve this system of equations using an augmented matrix. 8x + 8y + 8z = 96
- 4x + 2y + z = -51
- 3x - 4y + 3z = -15
20.

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft. what is the area of the stage? enter your answer in the box. ft²

Bobs burgers bam has a special deal of 4 hamburgers for $6. at that rate, how much should it cost to buy 3 hamburgers?

Over the course of a month, a person's weight decreases. what type of relationship is this? a. positive relationship