Contents
What does it mean when a plus sign is on top of a minus sign?
±
(mathematics) The symbol ±, meaning “plus or minus”, used to indicate the precision of an approximation (as in “The result is 10 ± 0.3”, meaning the result is somewhere between 10 – 0.3, that is, 9.7, and 10 + 0.3, that is, 10.3), or as a convenient shorthand for a quantity with two possible values of opposing sign and …
How do you make the plus minus symbol?
Type 00b1 or 00B1 (does not matter, uppercase or lowercase) and immediately press Alt+X to insert the plus-minus symbol: ±
How do you do the plus and minus on top of each other?
The Plus or Minus Symbol alt code is 0177. Even though this Symbol have no dedicated key on the keyboard, you can still type it on the keyboard with the Alt code method. To do this, press and hold the Alt key whilst pressing the Plus Minus Symbol Alt code (i.e. 0177) using the numeric keypad.
What are the different signs of division?
Basic math symbols
| Symbol | Symbol Name | Meaning / definition |
|---|---|---|
| ÷ | division sign / obelus | division |
| / | division slash | division |
| — | horizontal line | division / fraction |
| mod | modulo | remainder calculation |
What does +/- mean in math?
(mathematics) the symbol ±, meaning “plus or minus”, used to indicate the precision of an approximation (as in “The result is 10 ± 0.3”, meaning the result is anywhere in the inclusive range from 9.7 to 10.3), or as a convenient shorthand for a quantity with two possible values of opposing sign and identical magnitude …
Where is the degree symbol on a keyboard?
In Android, switch to numbers ? 123 then symbols =\< . The degrees symbol is found on the second row.
What does a plus and minus make?
Adding and multiplying combinations of positive and negative numbers can cause confusion and so care must be taken. Two ‘pluses’ make a plus, two ‘minuses’ make a plus. A plus and a minus make a minus.
What symbols mean multiply?
the symbol (⋅), (×), or (∗) between two mathematical expressions, denoting multiplication of the second expression by the first. In certain algebraic notations the sign is suppressed and multiplication is indicated by immediate juxtaposition or contiguity, as in ab.
When do you use minus sign instead of plus sign?
Why is the minus sign, ‘-‘, generally not overloaded in the same way as the plus sign? The plus sign + is used for addition and for string concatenation, but its companion: the minus sign, -, is generally not seen for trimming of strings or some other case other than subtraction.
When to use plus and minus signs in chemistry?
In chemistry, superscripted plus and minus signs are used to indicate an ion with a positive or negative charge of 1 (for example, NH+. 4 ). If the charge is greater than 1, a number indicating the charge is written before the sign (SO2−. 4 ).
Who was the inventor of Plus and minus?
Robert Recorde, the designer of the equals sign, introduced plus and minus to Britain in 1557 in The Whetstone of Witte: “There be other 2 signes in often use of which the first is made thus + and betokeneth more: the other is thus made – and betokeneth lesse.”.
Why is the ± on the other side equal?
Because we were factoring a difference of squares, we arrived at two solutions, being equal other than for their signs.