Answer: 12 pints
Step-by-step explanation: if there are 8 pints in a gallon. We have 1 and 1/2 gallons
1 gal = 8 pints
1/2 gal = 4 pints
8 + 4 = 12 pints total
The total mass for proton is -7.3 and the mass of the electron is 63.1. I'm sorry, I don't get the second part of the question.
Answer: 7 multiple choice questions and 8 free response questions
Step-by-step explanation: m is the number of multiple choice questions and f is the number of free response questions.
m+f=15
m+2f=23
You can subtract the first equation from the second, and get f=8
m+8=15
m=7