Which ratio below can also be considered a UNIT RATE? $10 : 2 hours

$5 : 1 hours

$20 : 4 hours

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Can someone pls ! pls answer all. no explanation needed..