Help math asap I need help pls

2x+3y=12 x-y=6 solve the following system equations

Which expression is equivalent to 4 square root 6 divided by 3 root 2

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.