Y=-5

5x+4y=-20

it say solve by substitution

A remote-controlled boat can travel at 4 feet per second in calm water. the boat traveled 48 feet with the current, and then it traveled 16 feet against the current in the same amount of time. How fast is the current?

How do you subtract 4/5 from 0.3

A barge can safely haul no more than 400 tons across the river. The barge has an empty weight of 24 tons. The average weight of the railroad cars is 4 tons each. How many railroad cars can the barge haul?

Which number produces a rational number when added to 0.25?

A gallon of water weighs 8.3 lbs. How many gallons of water would a 40 lb watermelon hold?

The art teacher found 3 boxes of brushes and 4 extras brushes. There were 40 brushes in all. how many brushes were in each box

Xavier and Madeline's age combined is 28. Xavier is 4 yrs older than half of Madeline's age. How old will Xavier be in 2 yrs?

Rover's cylinder dog bowl has a diameter of 6 inches and a height of 2 inches. Approximately how much water does it hold? Use 3.14 for pi and round your answer to the nearest cubic inch.

October, 13 Games in November, 12 Games in December, and 15 games in January. If he randomly is given one of those games in those 4 months what is the probability that the game will be in December? A) 12/55 B) 2/9 C) 4/15

A road that is 4 miles long has street lights on each side of the road every 1/8 mile how many street lights are on the side of the road