How do you know if a number can be divided by 10 evenly?

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.

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?