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Roots of a quadratic equation

Calculator based on the entered coefficients calculated roots of a quadratic equation.              


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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 VAT refund for building materials

The calculator calculates the amount of VAT that can be refunded in respect of incurred expenses associated with the purchase of construction materials.                    
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The generator ideal body weight by the formula ALIC

The calculator allows you to calculate your ideal weight for your body according to the model of the American Life Insurance Company
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Battery life

Calculator based on the specified battery capacity and consumption estimates the time. Calculator does not take into account changes in CPU speed and action in the case of ACPI computers.            
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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.