Solve the system. x+2y=0

2x-y=4

The solution is ___

Explain your choice of method.

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

43lbs of tomatos cost $387. how much would 41lbs cost

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?