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# Word problem calculator

Are to write word problem; answer needs to be 2 1/5. don't have a clue how to do this

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## Related Questions:

### F(x) is cubic function with zeros at +3 and +2+2i, find equation for f(x)=-12 need help please

A cubic polynomial with real coefficients has three roots (in the field of Complex numbers). One root is real, the other two are complex conjugate.
Roots are z=+3,z=2+2i, z=2-2i
F(z)=(z-3)(z-2-2i)(z-2+2i)

Jun 24, 2014 | Office Equipment & Supplies

### How do i calculate ratios

You don't need a calculator for this. Simply multiply both the numerator and denominator by 2 to get 2/30.

Apr 12, 2012 | Casio FX-115MS Plus Calculator

### The vatican city is the smallest independent country in the world. it has an area of 47.90 ha. what is the area of the vatican city in in2?

Not all the conversions are built into the fx-115ES (the list of conversions is printed on the inside of the calculator cover), but here goes.

First, if you don't know it, get the conversion factor from meters to inches. There's no single conversion for this on the calculator, but one way is to convert from 100 cm to inches by pressing
1 SHIFT 02 =
Store this result for future use by pressing
SHIFT RCL (-)

A hectare is 10000 m^2, so 47.90 ha is 479000 m^2. Now convert this to in^2 by multiplying by the square of the stored result. Press
4 7 9 0 0 0 * RCL (-) x^2 =

Jun 25, 2011 | Casio FX-115ES Scientific Calculator

### How can I find :11^27mod 29 using my CASIO fx-99IES

11^27 = 13,109,994,191,499,930,367,061,460,371 which is 29 digits long.

You can get this result from the Windows calculator (scientific view) by entering 11 and then pressing x^y 27 = . Then use Mod 29 = to get the result, which is 8.

Unfortunately the Casio fx-991ms (as with most other calculators) doesn't have nearly enough digits to cope with this type of calculation. You therefore need to split the calculation down into more manageable chunks, as follows, which works on most calculators:

First calculate 11^3 = 1,331 and work out Mod 29, which is 1,331 - 45×29 = 26.
Then calculate 26^3 = 17,576 and work out Mod 29, which is 17,576 - 606×29 = 2.
Finally calculate 2^3 = 8. Since this is less than 29, it is also the final answer as confirmed above.

This method can be used with any power number that can be factorised into numbers that don't cause the available digits of the display to overflow. In this case 27 = 3×3×3 so each step involves cubing the previous answer.

Jun 13, 2011 | Casio FX991MS Scientific Calculator

### How do I do like 12 to the 252 power

1 2 ^ 2 5 2 =

The ^ key is above and left of the 7 key. This is the key you use for raising a number to a power. If you don't get the correct answer, it's because 12^252 is outside the range of the calculator.

Apr 11, 2011 | Texas Instruments TI-30 XIIS Calculator

### My calculator is returning an answer with a 7 for division

You need to set the number of decimal places to 1 or more.

• Press [2nd] [MODE] and scroll to FLOAT.
• Press the right arrow key until the number of decimal places needed is highlighted.
• Press the [ENTER] key.

For 2 decimal places, 2 should be highlighted. All answers will then be rounded to 2 decimal places.

May 03, 2010 | Texas Instruments TI-30X-IISTK Scientific...

### When I square a negative number (eg -2^2) it gives me a negative answer (-4) why isn't it giving me a positive answer?

You're not squaring a negative number, you're negating a square. What you need to do is calculate (-2)^2 instead of the -(2^2) you're now calculating.

Feb 04, 2010 | Texas Instruments TI-83 Plus Calculator

### I need my calculator to on default mode.

All that can be fixed if you reset the calculator.
Turn on the calculator if not already on, push "Shift" "9", which gets you to 3 options. Push option 3 for "All". Then "=" and "AC". That should reset the machine.
If you like your answers in decimal (all the time), such as 5/8=0.625 and not 5/8 then push "Shift", "Setup", "2". Or... just push the "S<=>D" key.

Jan 22, 2009 | Casio FX-115ES Scientific Calculator

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