What is the sum of these two equations? 2x+3y-z=5, x+3y+2z=-6

Five times a number added to twelve is nine times the number

A rectangular piece of cardboard is a = 11 in. longer than it is wide. squares 2 in. on a side are to be cut from each corner and then the sides folded up to make an open box with a volume of 84 in3.

A kangaroo jumps 8.4 feet and then 7.7 feet how far has it jumped

There is a line whose slope is 1 and whose y-intercept is 2. What is its equation in slope-intercept form? Write your answer using integers, proper fractions, and improper fractions in simplest form.

A pound of seedless red grapes costs $2

What is the answer to y = 2x-5

A number multiplied by itself and then by itself again gives 1,000what is the number

A candy store sells 8-pound bags of mixed hazelnuts and cashews. If c pounds of cashews are in a bag, the price p of the bag can be found using the formula p = 2.59c + 1.72 (8-c). If one bag is priced at $18.

Using the equation Y = 2/3x - 5 describe how to create a system of linear equations with an infinite number of solutions.

Which of the following sets represents M∪N? {2, 5, 8} {4, 7} {3, 4, 6, 7, 9} {3, 6, 9}