−5x−4y
4x−5y


=2a
=2


Which of the following choices of aaa will result in a system of linear equations with exactly one solution?

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?