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Math

# 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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## 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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## Calculator floor panels

Calculator based on the dimensions of the area to put the panels and occupancy data on number of panels in one package, calculate how much you have to buy packages of panels to cover the entire room.
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## Verifier NRB / BBAN

Calculator allows you to verify the correctness of the entered account number.
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## Verification of the social security number in Poland

It presents data deriving from the unique social security number, such as date of birth, sex, serial number and check its correctness.
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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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Medical

## Ceiling oxygen uptake (VO2 max)

Calculator to the data calculated threshold of human breathing, the oxygen absorption by the body. This is one of the basic indicators of human performance. http://pl.wikipedia.org/wiki/Pu% C5% 82ap_tlenowy