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How do i calculate ratio - Casio FX83GT Scientific Calculator Calculators

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Unless you are meaning something more specific, ratios are calculated through simple division. For example if there are 2 oranges and 4 apples, the ratio of oranges to apples is 2:4, and the ratio of oranges to the total number of pieces of fruit is 2:6. These ratios can also be expressed in fraction form: there are 2/4 as many oranges as apples, and 2/6 of the pieces of fruit are oranges. If necessary you can perform the calculation 2/4 = 2 therefore there are .5 (half) as many oranges as apples and 2/6 = 0.33333333333333 therefore approximately .333 pieces of fruit are oranges.

On your calculator you should simply need to use the division button to accomplish this.

Posted on Oct 29, 2012

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I assume that you mean something like a price/earnings ratio, as the stock price is usually given by the price on the stock market.

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Assuming the floor is rectangular, the perimeter is 918 and the area is 50318. The ratio of these two numbers is 459:25159.

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How to simplify ratios using scientific calculator fx-991ms

If you enter the ratios using the fraction entry key ( [a b/c] the results will be displayed as fractions. And when the calculator displays fractions they are always in their reduced form.
In general, when you are manipulating fractions ( Pi/2 is no a fraction even if you write it as one) you can try to simplify them by looking for the greatest common factor (GCF) of the numerator and denominator. When you simplify by the GCF the fraction that is left is in its reduced form.

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Can you do any ratio on the cauculator

Most of the time a ratio is nothing but the division of two quantities. If you have a fraction key, enter one term of the ratio as numerator, and the second term as denominator. If you do not have a fraction key just use the division key.
According to the name Fraction Mate, you calculator can do fractions. Enter your ratios as you would fractions.

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I just want to know how to do ratios on my calculator

For all practical purposes, ratios involve nothing but the division of one quantity by another. Thus you use the division key. The first cited in a ratio is put in the numerator (dividend), the second named is put in the denominator (the divisor).
2:3 translates as 2/3.

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

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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.

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I have a TI-84 Plus Silver Edition calculator and I need to find the inverse key to get values for sin, cos, tan, csc, sec, cot. I'm past the lesson where you use the 2nd/sin, cos tan to find the...

There are no keys for cosecant, secant, and cotangent. You can calculate those ratios as

csc(x) = 1/sin(x)

sec(x) = 1/cos(x)

cot(x) = 1/tan(x)

Simply calculate the trig ratio on the right and then take its reciprocal.

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Here is the link to the calculator manual. It will show you how to do square root calculations, percentages, other roots, and logs. As to ratios and proportions you will have to read your mathematics textbook.

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Use the calculator's arc ratios the same way you would in real life.

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1 Answer

DB to Power ratio using antilog

The conversion formula is
# dB =10*log(Pout/Pin) for say an amplifier.
For your case
Pout/Pin= 10^4 then #dB =10*log(10^4)=10*4=40 dB

Let us take a less obscure exemple

# dB= 57.39, what is the power ratio?
10*log(Pout/Pin)= 57.39
Pout/Pin=Ratio =10^(5.739)= 548276.9649, not a number you would hear or see quoted, but a correct value.

To calculate the power ratio
  1. Convert the decibels in Bels (divide by 10)
  2. While the number just calculated is still in Answer memory (ANS), press [SHIFT] [LOG] to access the the 10^x function
  3. Press [SHIFT][(-)] to enter (ANS)
  4. Close the parenthesis [)]
  5. Press [ENTER]
Here is the screen capture for the calculation one way and back.


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