Which equation is not true 10/12=5/6, 69/100=6/10, 10/5=200/100, 12/4=6/2

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?

Astudent has created the give circuit diagram. it consists of a battery, a resistor, and a light bulb. in one minute, 1.2c of charge flows through the resistor. how much charge flows through the light bulb in one minute?