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Whether a number is prime

Checks the user number is a prime number.


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Weighted average ratings

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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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Calculator download speeds

Calculator allows you to calculate the approximate download time on a given value for a circuit given parameters.                
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The geometric mean

Calculator based on the entered numbers separated by commas calculates the geometric mean.        
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Insulation of wall

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Calculator allows you to calculate the amount of insulation panels needed to cover the walls of the building using the "light wet" or "dry light" methods.
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Health

The percentage of body fat - the method YMCA

Calculator to the data calculated the percentage of body fat by the YMCA.                        
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Keystone field

The calculator calculates the trapezoid box.