Im and i dont know math at all i want to learn

sodium hydroxide, with 5 volts applied to the circuit to produce hydrogen and oxygen, via electrolysis, would the pure silver electrodes react with anything or be completely unreactive? Im guessing the electrodes will be unreactive, but since electricity is part of the equation, it seems possible for there to be reactions between the silver metal and maybe oxygen or something else depending on the voltage level, but to be honest, i never had a chemistry class, so i dont really know what might happen at all besides guessess i could make according to the little knowledge about all this i got here and there over the years. So here i am, in hopes of a person who does know what will occur.

to get my math on point because im really bad at math

rectangular sheet of paper, AB 15cm and BC 12= so that the fold line goes through the corner A and the corner B ends up in the figure. Calculate the area of ​​the quadrilateral AECD and the triangle ABC. 12cm. The sheet is folded to the side of the CD, see

d and my friends are weird so yeah they might be weird on this app and sorry if they get weird

work easier. I have several problems: a) I dont have any ideas on machines. B) I need help really in general. So far i have 7 examples them being a wheelbarrow, a pulley, a ramp, an ax(e) and a hockey stick. I was wondering if you could help me explain how they make work easier. Also, I'm having trouble identifying the input and ouput forces on these machines. Please help. Btw, im grade 8.