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Math
Number of tetrahedral
Tetrahedral numbers are the natural numbers, for which it is possible to construct a tetrahedron formnego of bullets. They are a special case of the pyramidal numbers.
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Weighted average ratings
The calculator calculates the weighted average of the ratings of the following items.
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Math
Trigonometric functions calculator
Calculator by entering an angle in degrees or radians calculated values of the basic trigonometric functions.
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Math
Arabic numbers Converter - Roman
Calculator converts numbers to roman Arabic or Roman to Arabic vice versa. The maximum value that the calculator correctly parse the number 3999.
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Information technology
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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Bernoulli scheme
Calculator allows you to calculate the probability of a given number of successes with a specified number of trials and probability of success.
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Physical
Parallel connection of resistors
The calculator calculates the equivalent resistance of two resistors connected in parallel.
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Medical
Unit Converter glucose (blood sugar)
converter converts the blood sugar level in milligrams per deciliter (mg / dL) in millimoles per liter (mmol / L) and vice versa. http://pl.wikipedia.org/wiki/Glikemia
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Building
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.