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79Use of Mathematics in Economics
How mathematics is important for the better understanding and study of various economic theories
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87Five Methods to Calculate your Body Fat Percentage by Using a Tape Measure
Wouldn’t be nice to be able to determine your body fat percentage without the use of expensive scales, special devices, or traveling to see the doctor? Here are five methods that you can use to estimate your body fat percentage at home.
4 comments
77Alkanals and Alkanones: Chemistry of Aldehydes and Ketones
Preparation of alkanals (aldehydes) and alkanones (ketones) by the oxidation of primary and secondary alkanols (alcohols) respectively. Oxidation and reduction reaction of aldehydes and ketones. Test for alkanals and alkanones using Fehling's solution and Tollen's reagent.
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758.3.1 - The living and non-living components of the Earth contain mixtures - Part 1
Identify the difference between elements, compounds and mixtures in terms of particle theory. Welcome to chemistry!
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73The SETI Wow! Signal: Evidence of Alien Contact?
Was the Wow! Signal captured by a SETI researcher in 1977 proof of contact by an alien race? The real source of the Wow! Signal has never been pinpointed, but many can't help but wonder.
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832012 GCSE Maths Foundation Exam. 5 top topics to revise to help you get a grade C (non-calc paper)
In this hub I will go over some of the more mathematical topics that will have a high proabability of showing on this years maths GCSE non-calculator foundation exam. All the topics covered here are grade D and C topics, so these are the ones to...
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85How Much Weight Do You Actually Push Up During a Pushup?
When doing pushups, do you know how much weight you are lifting? In this article, I calculate the percentage of your body weight that is lifted during a pushup.
13 comments
80Chemical Equations, Importance of Chemical Equations and how to Balance Equations
Chemicalreactions as expressed by chemical equations showing reactants and products. How to balance chemical equations and importance of chemical equations.
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65Algebra Techniques: Solving Linear Systems by Elimination
elimination is a method of solving simultaneous linear equations. see how the technique works with an example.
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87Worldbuilding: Geography
The late David Eddings, a New York Times bestseller of epic fantasy, once told a story of the day he scrawled a random continent on a bit of brown paper, divided it into little countries, began developing the cultures that lived in each one, and...
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