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Weighted average ratings

The calculator calculates the weighted average of the ratings of the following items.              

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Conversion between number bases

Converter allows you to convert numbers between number bases - binary (binary), trójkowym, czwórkowym, Friday, szóstkowym, siódemkowym, octal (octal), dziewiątkowym, decimal (decymalnym) jedenastkowym, dwunastkowym, trzynastkowym, czternastkowym, piętnastkowym, hexadecimal (hex). Typed characters that are not numbers and the letters A, B, C, D, E, F are ignored.      
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Trigonometric functions calculator

Calculator by entering an angle in degrees or radians calculated values ​​of the basic trigonometric functions.
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Percentage calculator

This calculator allows you to calculate the percentage of the given numerical values.
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Number of square-triangle (square triangular number)

Number of square-triangle has the properties of a square and a triangular number.          
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The line passing through the given points

Calculator gives the equation line passing through the points specified by the user in the Cartesian coordinate system.          
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Calculator - dosage of CO2 in the aquarium

Ile co2 w akwarium? Dawkowanie co2 w akwarium.
The online calculator by entering the pH and kH values ​​to calculate the concentration of CO2 in the aquarium.                
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Area and perimeter of the cone

Area and perimeter of the cone Calculator by entering the radius of the base of the cone, and its height is calculated lateral surface area of the cone, the total area and volume.   The radius of the base of the cone            
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Combination of characters and numbers

Calculator allows to determine the existing combinations for the user-specified string.