# There is a minus sign above zero how do i remove it ms-80s

The minus sign is encased in a black square.

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### Minus 20% of 175.00 using the percentage key

On most Casio calculators you must type: '175 x 20 % -' (and '+' is for adding a percentage)

Feb 18, 2015 | Casio MS-80S Calculator

### 2 black wires from pump, which is pos. or does it matter

You should connect the pump with 3 wires: one is phase, one is zero and one is earth. It does not matter which is phase or which is zero. when there is a square sign on the pump this means the pump is double isolated and you only have two wires, and it does not matter how to connect to mains.

Nov 21, 2014 | Pool & Spa

### Minus sign display problem

Calculators have two similar signs: the regular minus sign for subtraction, and the negation (change sign) sign. When applied, the latter changes the sign of the quantity to which it is applied. The minus sign - for subtraction is on the central line, the negation sign is smaller and somewhat raised above the center line.
The change sign key may be marked (-) , (+/-), or +/-

Nov 08, 2013 | HP 35s Scientific Calculator

### Where is the negative sign?

The negative sign is the same as the minus sign. It is above the [+] and below [x] . Using the minus button will have the same effect and will negate the number you press after it.

Mar 21, 2011 | Sharp EL-738 Scientific Calculator

### Err:syntax when I try to graph with ''-'' on ti-84 plus

Hello,
The calculator has two minus signs
1. The regular MINUS sign which is used with the subtraction operation. This operation is binary, requiring two operands (two terms). In a-b, a and be are the operands (they very specific names, but I will skip this detail).
2. The negation or change sign. This operation is called unary, requiring one operand. -a means take the negative of the number a.
These are the technicalities, in which you may not be interested. On calculators, the two operations are implemented differently, with two signs, the regular minus sign -- , and the change sign (-) usually smaller in size than the regular -- sign and raised above the main line.

Examples. Let (-) be the negation and -- the regular minus.
• If you enter (-) 12 the TI84Plus accepts it and calculates the negative of 12.
• If you enter 12 (-) 13 the TI protests with a syntax error
• If you enter 12 ( (-) 13) the calculator interprets it as 12* (-13) and calculates -156.
• If you enter --12, the calculator displays Ans--12, where Ans is the last result calculated. If Ans happens to be 0, the new result is obviously the one you are expecting. But if Ans holds a non zero value, this is incorrect.
Suppose you have to calculate X^(-2)*X^(-1/3)
You can enter it exactly as it is written above. In this case, you must use the change sign (-) in both factors.
You can also decide to use the power rules and enter the expression as X^( -2 --1/3). In this case the first minus is the negation and the second is the regular minus.

I could go on with a few more examples, but that will take us away from your present concern.

In short.
1. If the minus sign is the leftmost (first) symbol in your function (after the Y1=) you should use the negation. Any subsequent minus should be the regular minus --
2. If the minus sign is the first symbol in an exponent, you must use the negation. Any subsequent minus in the expression of an exponent should be the regular minus --
I hope it did not bore you death with details you do not care to know about. I do hope that it will help you prevent this type of syntax errors.

Do not forget to rate the solution

Dec 13, 2009 | Texas Instruments TI-84 Plus Silver...

Hello,
Calculators usually have two minuses, the regular minus sign and the change sign sometimes labeled (-) or (+/-). The latter is not meant to effect a subtraction, but to take the negative of the number you just entered. Big difference, would you say, but the syntax is different.
Ex: 15 - 7 is a subtraction with result 8
10 (-) displays -10 on the screen.
In some calculators the change sign is smaller than the regular minus, and is raised above the main line.
Hope it helps.

Oct 05, 2009 | Victor 1208 Calculator

### How to solve a quadratic formula using a casio fx-300 MS

Hello,
The calculator does not have a solve program, but you can still use it to solve the quadratic equation with a little effort. If you know the therory skip toward the end.

Let aX^2+bX+C=0
1. First calculate the discriminant usually called Delta and given by
Delta =b^2 -4*a*c store the value in the variable D
If Delta is positive you have two roots X1 and X2 given by
X1=(-b+square root of Delta)/(2*a)
X2=(-b- square root of Delta)/(2*a)

If Delta is equal to 0, X1=X2=-b/(2*a)
If Delta i negative, no real solutions exist

You only solve if Delta is positive or equal to 0.

Putting in the values of a, b, and c
value of a (put you number) [SHIFT][STO] A
value of b (put your value) [SHIFT][STO] B
value of c (put you value) [SHIF][STO] C

[ALPHA] B [X^2] -4[x][ALPHA] A [x][ALPHA] C [=]
Value of delta is displayed. If it is positive, you store its square root in D

[Square root] [ANS] [SHIFT][STO] D ;

Calculate 1/(2*a) and store in variable F
1./(2[x] ALPHA A) [SHIFT][STO] F

To obtain X1
[ALPHA] F [x] ( (-) ALPHA B + ALPHA D ) [=]
To obtain X2
[ALPHA] F [x] ( (-) ALPHA B - ALPHA D ) [=]

Be careful: the (-) is the change sign not the regular minus sign.

Hope it helps.

Sep 24, 2009 | Casio FX-300MS Calculator

### My calculator will not let me add or subtract percentages.

I have a Casino MS-80S and yea, the percentage works different. As example to take 100 and subtract 10%, this is what I do: 100 X 10% - and then I get the answer 90 after I press the minus key. To add the percentage instead, 100 X 10% + will give me an answer of 110, after I press the plus key.

Apr 04, 2009 | Casio HR8TM Calculator

### No display on flip out screen

I have a Sony DCR-TRV30. Your camara is probably similar. On the bottom left outside corner of mine, there are two buttons, labeled "exposure" and "program AE," and a small thumb wheel above them. Set the indicator to "camera" and open the screen. Push the "exposure" button and a light grey rectangular screen with a minus sign on one end and a plus sign on the other will appear near the top left corner of the screen. Rotate the thumb wheel so that the small black square in the rectangular screen will move from the "+" side towards the "-" side while the image on the screen gets darker.

Jan 04, 2009 | Sony Handycam DCR-DVD108 DVD Camcorder

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