what does an equal sign w/ 3 lines instead of 2 mean?
436400
The equal sign with three lines means: \n"Exactly equal to" or "Identical to"\n\nThe equal sign where the top one is curvey means:\n"Approximately equal to"
366569
One possible symbol would be upper case delta (triangle) with a diagonal line through it, since delta represents change, and putting a line through something, general means not this (think of not equal).
740420
Wait a minute everybody!\nthose vertical lines,( lyl ) could mean absolute value!!\nHelloooo?\nso the answerSSS could be 9 and -9\nsheesh!
21689
A - sign outside (  ) changes all the signs inside the (  ). \nn^2   -3n   +1 \n-4n^2  -n  +5   Stacking the values in columns helps combine the 'like' terms, which have the same letter(s) to the same power(s)\n\n-3n^2 -4n +6
889816
1/rt3 *1/rt2-1/rt3\n[1/rt3](1/rt2-1)\n[1/rt3](1-rt2/rt2)\nrationalising\n[(1-rt2)*rt6]/6
365207
|b+3|<=4 means\n-(b+3)<=4 and so b=-7 which is smaller than the value b=1\n\nYou have to consider the smaller value when you have 2 options as per the question.\n\nModulus means both + and minus.\n\n|7| means + or - seven.\n|b+3| means + or - (b+3).\nYou gotto consider the smallest of two in the question...and so go for the negative value which givews you b=-7.
754121
Given:\n7<=3-2p<11\n\nYou want to isolate p, and as long, we only add and subtract its OK as long we do it in every term in the inequality.\n\nOf cause, we want to add -3 in the term in the middle, and therefore in rest of the expression, we get:\n7-3<=3-3-2p<11-3 <=>\n4<-2p<8\nNow we want to divide with 2 and we can do so, as long, we do it in all term, but we also want to multiply with -1, but it's also OK if we remember to reverse the inequality sign. \nThis use to be the point of confusion in calculation with inequalities\nHowever, it is easy to se that it is true\nEx 7<8 multiply with -1 gives\n-7<-8 but that not true therefore we have to reverse the inequality sign, if we multiply with a negative number.\n\nBack on track:\n\n4<=-2p<8<=>\n-4/2=> p >-8/2\n.......NB!!.NB!!!\n -2=>p>-4 \nOr if you better like the result in adequate form\n\nx={ x in R l (-4<p<= -2)}\n================
976275
2x + 28 < with a line under it _ <_   6x\n\nsorry don't know how to add that special character in, but it is only one thing like the +\n between the 28 and 6
12600
In Custom format you can specify format as required by you.\nIt has three parts seperated by ;\n1st is for positive\n2nd is for negetive\n3rd is for Zero\nso you can specify as  follows to get the + sign displyed\n\n+#;-#;"Zero"
117480
2 questions but 3 question marks
723136
<3\n\nIt's an arrow pointing to the left, followed by the number 3.  Enjoy!
428762
8r\n2rt\n2\n\ni believe you only take the number (coeficient) and the letter (variable). The signs is another issue since is only operational.
346676
The symbol ≡ is a mathematical symbol that means "equivalent to" acording to one source, and "is defined as" in another source, and may also mean "congruence."  \n\nExample:  x ≡ y means x is defined to be another name for y\n\nIn other words, it's a logical relationship, rather than the  result of an operation.  For example:  2 + 3 = 5  \nIn that example, the equal sign means equal to, or the result of adding 2 and 3.
817396
Since B is in the middle, lets set B as 0 for example purposes.  A would be any negative number (A<B) and C would be any positive number (B<C).  Since there are no 'or equal to' symbols, A<C.  This is true for all possilbe cases.
944510
:) Actually, you are exactly right, it should pronounced:\nsix p two one dot three.\np or q indicates the arm, the next number the band, the next the subband, etc. The numbers are not decimal!!! p21 doesn't mean there is p17 or p18, that depends on the given chromosome.\nTo be honest, in everyday usage, we commonly would say six p twentyone dot three... :)
156981
2 ( / means divided by )
5376
first line is "a=b", therefore a-b = 0\nso when it says "divide both sides by a-b", it really means "divide both sides by 0, which results in some probably invalid, and definitely not finite, values on each side"