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Calculates the nth nonagonal number.

A nonagonal number is a figurate number. This is a number that can be represented by a regular geometrical arrangement of equally spaced points. If the arrangement forms a regular polygon, the number is called a polygonal.

Nonagonal Number Formula
Nn = n(7n - …

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Demonstrates how to calculate the nth pentagonal number.

A pentagonal number is a figurate number. This is a number that can be represented by a regular geometrical arrangement of equally spaced points. If the arrangement forms a regular polygon, the number is called a polygonal.

Pn = n(3n - 1)/2

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This calculator determines the nth hexagonal number

A hexagonal number is a figure number. This is a number that can be represented by a regular geometrical arrangement of equally spaced points. If the arrangement forms a regular polygon, the number is called a polygonal.

What formulas are used f…

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Sept. 20, 2022

Bid-Ask Calculator

Given a bid amount and an ask amount, this calculates the spread and the margin percent.

Timestamps:
00:00 Intro
00:35 Spread Calculation
01:12 Margin Percent Calculation

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Sept. 19, 2022

Percent Error Calculator

Given an experimental (actual) and theoretical values, this calculates the percent error.

Timestamps:
00:00 Intro
00:35 Percent Error Definition
00:55 Percent Error Calculation

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Sept. 18, 2022

Price Calculator

Given a cost and a gross margin percent, this calculates Price, Gross Profit, and Markup Percent.

Price = Cost/(1 - Gross Margin)
Gross Profit = Price * Gross Margin
Markup = Gross Profit * 100/Cost

Timestamps:
00:00 Intro
00:16 Start Calculation
00:46 Calculate Price
01:21 Calculate Gross P…

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