Question about Casio FX-250HC Calculator

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Substitute for 1/X key

I just purchased a Casio fx-300MS calculator and it does not have the 1/X function key. How do you substitute for this operation?

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  • Anonymous Mar 18, 2009

    1/x

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  • Casio Master
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Use the x^-1 key, second row, far left. 1/x is x to the -1 power.

Posted on Aug 05, 2010

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I want to show a 6% sales increase from last year to this year. How do i figure it?


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Or

Take your sales from last year, multiply by 6 and then divide by 100. That is the amount you will increase. Add it to last years sales.

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I want to reset this thing


Sorry there is no "reset" for your printing calculator.

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My 202 doorbell does not "react" if the button is pushed AFTER my neighbor unlocks his car by using his remote key. Can I change the frequency range of the doorbell?


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Nov 19, 2014 | Office Equipment & Supplies

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What is the Formula for calculating volume of a cylinder


volume is calculated by finding the area multiplied by the length or height . That is Pi X radius squared X length
example --tube 6"dia 12"long what is the volume?
Example 3.1417 X radius 3" Squared =3.1417X9sq " = 28.2740sq" X length 12" =338.688 cubic"
If you want the volume of an engine cylinder , it is the same formula and the length is the stroke of the piston ( distance from TDC to BDC )

May 20, 2014 | Office Equipment & Supplies

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Formula for circumference


Circumference of a Circle: 2 x pi x radius - OR - pi x diameter,

or if you need some sphere calculations?

Sphere Surface Area: 4 X pi X radius squared OR
pi X diameter squared Sphere Volume: 4/3 X pi X radius cubed OR
( pi X diameter cubed ) / 6
By the way.......... "pi" = 3.1415926536




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Apr 29, 2014 | Office Equipment & Supplies

1 Answer

What are rational numbers


Use the words: decimal part, not decimal fractin
Any number whose decimal part is periodic (has a recurring pattern that repeats indefinitely) is equivalent to a rational number, IS a rational number
0.345 345 345 ... =345/999=115/333
In the following screen captures, discard the last digit if it does not belong to a period. It is the effect of rounding up of the calculator


3deb58af-3d70-4f55-adc1-35b7c9392031.jpg
Period is 345

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Period is 1
847342a7-5d3b-4604-b706-2ec9853c2dc7.jpg
Period is 09
8f929e6d-512c-41e2-a253-ffa88c0ab74e.jpg
Period is 79
0417fef1-6661-4f31-868f-8202884893ae.jpg

In general, if you have a decimal part of the form 0.d_1 d_2 d_3....d_n d_1 d_2 d_3 ...d_n ... where d_1 is the first digit of the period, d_2 is the 2nd digit of the period, ..., d_n is the n-th digit (and the last one) of the period, then the fraction representation of
0.d_1d_2...d_n d_1d_2... d_n ...=(d_1d_2...d_n)/(99...9) where the number of 9's in the denominator is equal to the number of digits in the period.
Once the fraction is found, one should reduce it to its simplest form.

Mar 02, 2014 | Office Equipment & Supplies

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How to calculate 2^24 in bistec calculator bs-991ms


you cant you have to get a scientific calculator with the carrot symbol like this ^

Sep 14, 2013 | Office Equipment & Supplies

1 Answer

Ilos to stones conve


454 grammes to a pound ,use the calculator in the computer but roughly that 1cwt or 100 pounds divided by 14 ,which is 14 pounds to one stone ,wow this takes me back to pre decimalisation

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The circumference of a circle is 47.1 feet. What is the diameter of the circle?


The circumference of a circle is C=2 * pi * r or C= pi * d.

What do we know? C=47.1 and pi.

What are we trying to calculate? d

Put what we know in the equation and solve for d.

47.1 = pi * d

To isolate d, we have to divide both sides by pi.

47.1
------ = d
pi

I get 14.99' or approximately 15' as the diameter.

Good luck,
Paul

Apr 17, 2013 | Office Equipment & Supplies

1 Answer

.72-.65=.07 How do I calculate the % for the


move the decimal 2 places to the right. 7%

Jan 27, 2012 | Office Equipment & Supplies

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