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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

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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The center point (mid point)

The calculator calculates the coordinates of the point located exactly halfway between two preset points in the two-dimensional plane.          
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Excise tax refund calculator in Poland

Calculator based on the specified value of the car, paid tax engine calculates the amount of refund of excise duty.              
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Calculator for tile adhesive

Calculator based on the given surface tiles, tile side length and the number of doors and windows calculates the required amount of adhesive.                  
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Calculator child's blood group

Calculator based on blood group made ​​of both parents, given that they are owned by the child possible blood groups.
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Gross-Net Calculator prices of goods and services in Poland

Jak obliczyć kwotę brutto z uwzględnieniem podatku VAT? Jak obliczyć kwotę netto z uwzględnieniem podatku VAT?
It allows you to calculate the amount of gross or net price including VAT