20 Most Recent Casio FX-300MS Calculator - Page 3 Questions & Answers

I will assume that the percentage is per volume (20% per volume, 40 per volume.Let x be the number of liters of the 20% solution.What is the volume of alcohol in x-liters @20%?-----> .2xWhat is the volume of alcohol in the 40 liters of solution @ 50%? Obviously 20 liters.Amount of alcohol in the two solutions =.2x+20After you mix the two solutions what is the resulting volume? Resultant volume=x+40Percentage of alcohol in final solution: 30% or 0.3Quantity of alcohol in final solution =.3*(x+40)When mixing the two solutions, no alcohol is lost: The amount of alcohol before mixing is equal to the volume of alcohol after mixing (.2*x+.5*40) =.3*(x+40)Solve this equation for x. (Show your work) You get x=36 Liters. Check the result by replacing x in the equation.

To calculate the natural antilogarithm (inverse logarithm ) of a number, press SHIFT [e^x] then enter the number and press =The e^x function is the shifted function of the ln key. For example, to calculate the inverse logarithm of 3, press SHIFT ln 3 =

To calculate the natural antilogarithm (inverse logarithm ) of a number, press SHIFT [e^x] then enter the number and press =The e^x function is the shifted function of the ln key.For example, to calculate the inverse logarithm of 3, press SHIFT ln 3 =

can't quite make out the detail on buttons on the image I have of your calculator but here goes.

say for example, the geometric mean of 2 × 3 × 6 × 8 is the 4th root of 288, or approximately 4.12.

enter nth root first, in this case 4 then shift then root symbol then open bracket, 2x3x6x8, close bracket then = ,
should give you 4.1195 etc

When you enter it what you do with it? This calculator does not do algebra.

Hello,
Sorry to disappoint you but there is no special key to (solve) ratio problems. It does however have a key to enter mixed fractions ( [a b/c] ) and a key combination to convert between mixed and improper fractions [SHIFT] [d/c].
Hope it helps.

e^500 is about 1.4*10^217. That's 14 followed by 216 other digits before the decimal point. This number is much too large for your calculator to handle, thus the error.e^.500, on the other hand, is about 1.65 . (That's e to the point five). I think you dropped a decimal point somewhere.

Press the MODE key repeatedly until you get to the "Fix Sci Norm" line, then select one of the Norm modes. See the second column of the first page of this manual: http://support.casio.com/en/manual/004/fx-82SX_220PLUS_etc_EN.pdf

Look for a key marked with the Greek letter PI. The marking may be on the key itself, or on the faceplate of calculator. If marking is on the key, you press the key to enter an approximate value of Pi. If marking is on faceplate you will have to press the SHIFT key first.

Press the MODE key repeatedly until you get to the "Fix Sci Norm" screen. Press 3 then 2. If you need a manual, you may download a copy at http://support.casio.com/pdf/004/fx-82SX_220PLUS_etc_E.pdf

press shift mode = , this will help

Press the MODE key repeatedly until you get to the "Fix Sci Norm" screen. Press 3 then 2.If you need a manual, you may download a copy at http://support.casio.com/pdf/004/fx-82SX_220PLUS_etc_E.pdf

Look it's simple in the calculator the default base is 10 so when you input log 3 its log 3 base 10 so:
maybe you know in math log x base y = log x / log y . So if you need log 3 base 3 its => log 3 / log 3 (by the way its 1)

The button is marked "(-)" and is located just above the "RCL" button, two keys above the "7" button.

Press the MODE key a number of times until you get to the "Deg Rad Grad" screen, then press 1. See page E-18 of this manual.

hi emily, most scientific calculators have a feature to switch between deg-rad-grad. lookout for a switch DRG or so on the keypad, this feature might also be activated via a "second function" operation. check out your user manual for further in depth help.