What systems of equations have the same solution as 5x+2y=45x+2y=4 4x+y=24x+y=2

Will give brainliest what is the value of x? enter your answer in the box.

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?