Want this question answered?
Be notified when an answer is posted
Chat with our AI personalities
The capital 'R' that has two vertical lines instead of one like the alphabet letter stands for "all real numbers". If it is a lower case 'r' it would probably be a variable.
it stands for Faith in Jesus Crist
The point of using letters in algebra is that they can stand for any number (or a range of numbers that are, as yet, unspecified). There is no specific letter allocated to a number.
mathamatical algebra theoretical geometry hexagon six
You use variables to stand for numbers in algebra