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# algebra symbols and what they mean

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Question:Hi, I'm learning algebra and have encountered a couple of symbols which I don't know the meaning of. The first one is like an = sign but there are three horizontal lines, not two. The other sign is three dots in a triangle formation. There are two dots on the bottom and one centerally located same distance appart at the top. What do they mean? Thanks David

Answers:Three lines means 'is defined by' Three dots as a triangle means 'therefore'

Question:Right now the class is working on sets ex {4,5,6,7,8,9}. But when working with them I see a symbol that looks like an E and the same symbol only with a slash through it. Also there's another symbol that is a C but with a line under it and same as before there's the same symbol but with a line through it. Please help and thank you.

Answers:[ 1 ] Symbol : Meaning : Belongs To Ex. : 4 your set. .............................................................. [ 2 ] Symbol : Meaning : Does Not Belong To Ex. : 2 your set. .............................................................. [ 3 ] Symbol : Meaning : is a Subset of Ex. : { 6, 7, 8, 9 } your set. ..................................................................... Happy To Help ! ......................................................................

Question:its sorta a squiggly x its usually next to a number. I don't mean multiplication, its in my algebra book and i seemed to have missed learning that -__- here's an example if someone could explain it to me? 5x + 2x = 35 i dont get it ^^;;; How do you solve the problem?

Answers:It is like you have 5 apple and 2 apple. X is a variable like apple or anything. The coefficient in front of the x shows you how many "x" you have. Here you have 5+2 = 7 apple and Let say 7 apple is 35$, then one apple is 5$. Use math this means that ; x=5.

Question:In math or Algebra what so these symbols mean? * , / , and ^ I think the Astrix is multiply and the forward slash is divide. What about the others?

Answers:Hi: * mean multiplication / means divide ^ mean take the power of ( or how many time a number is multiplied by itself) example 2*3 = 6 6/2 = 3 3^2 = 9 ( means multiply 3 by itself twice)