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How To: Determine math proportions with the Square-Cube Law

Ever watch a cheesy movie and say "That monster is so FAKE!" but not really understand why? Well monstrous monsters are governed by a little biological rule called the Square-Cube Law, a scientific term combining math, anatomy and physics into one educational tool to recognize theatrical baloney when you see it. Just watch this video to see the explanation of the Cube-Square Rule, how it works and its ramifications for our favorite B-Movie pet monsters.

How To: Determine the eigenvalues of a 3x3 matrix

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to determine the eigenvalues of 3x3 matrices in eigenvalues.

How To: Determine prime factors & reduce fractions in MS Excel

As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 17th installment in his "Excel Business Math" series of free video lessons, you'll learn how to define prime numbers, determine prime factors, reduce fractions (i.e., write fractions in their lowest terms) and convert mixed numbers to imp...

How To: Determine if your toilet tank's flapper is faulty with tips from Lowe's

This video is about your magical bathroom device— the toilet. The toilet is a thing that sees a lot of use in the house, and problems can arise from time to time. One of the biggest bathroom issues is a toilet that runs on after flushing, or starts running or flushing by itself. It's a possessed porcelain poltergeist. Lowe's knows that's this problem can really run up your water bill, and they have some advice to stop that leaky toilet.

News: How Researchers Could Use Bacteria to Determine Time of Death

When a dead body is discovered, finding out when the person died is just as important as finding out how the person died. Determining the time of death has always involved lots of complicated scientific detective work and less-than-reliable methods. However, a study by Nathan H. Lents, a molecular biologist at the John Jay College of Criminal Justice in New York, is the first of its kind to show how microbes colonize a body's ears and nose after death.

How To: Determine the Value of a Used Car

Everyone hates to feel like they've been taken advantage of, especially when buying a used vehicle. The thought comes across every car buyer's mind... "Did I just get taken by that smooth-talking salesman?" When it comes to cars, how do you know if you're really getting a good deal, or if you're being offered a fair price for your car? After all, cars are most peoples second largest investment, so we need to make this decision wisely.

How To: Determine the equation of a trigonometric function

Need help in determining the amplitude and period of sine and cosine functions? This free video lesson will show you how. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free...

How To: Determine whether two fractions are equivalent in math

Looking for a guide on how to tell whether two fractions are rationally equivalent to one another? From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll...

How To: Use a fertility microscope to determine ovulation

Another way to track your ovulation cycle is with a fertility microscope. A fertility microscope allows women to identify their most fertile days by testing and viewing the visual changes that take place in saliva throughout the monthly cycle. This method is reliable and effective, and can greatly increase your chances of getting pregnant. All this requires is saliva, so it is not invasive and doesn't use needles. So, check out this tutorial for advice and instructions on how to use one of th...

How To: Determine the IP address of a email

The author shows how to identify the IP address of a email. He shows how to check the 'Show Original' options in Gmail and in that content how to identify where the email came from and exactly its IP address. Now we can take that IP address and go to any of the many IP lookup websites and trace the original geographical location of that IP address. By following the steps in this tutorial you can easily trace out the origination IP address of an email from which you can extract a lot of useful...

How To: Determine whether a pair of lines are parallel

See how to determine whether a set of lines are parallel given their equations with this free video math lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tut...

How To: Determine whether 2 triangles are similar in geometry

Looking for instructions on how to determine whether two triangles are similar in geometry? From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn ...

How To: Determine whether a pair of lines are perpendicular

See how to tell whether a set of lines are perpendicular to one another given their equations with this free video math lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series o...

How To: Determine your Xbox 360 drive band

In this Video Games video tutorial you will learn how to determine what is the brand of your Xbox 360 drive. This is a very easy and simple process. There are four brands of drives in the Xbox 360. They are Hitachi, Samsung, BenQ and LiteOn. For this you need to take the face plate off and check the hole under the DVD bezel. If you see a red wire, it's a Samsung drive. If you see a piece of black plastic, it is a Hitachi drive. A gray wire indicates a BenQ drive and if it's a LiteOn drive, yo...

How To: Determine the probability of dependent events

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to calculate the probability of two dependent events in statistics.

How To: Determine if a point lies on a line in standard form

In this video, we learn how to determine if a point lies on a line in standard form. In order to do this, you will need to substitute the X and Y value with the ordered pair that is given. The X value is the first number and the Y value is the second number. Re-write your equation, substituting in the numbers to the appropriate spots. Now, simplify the equation by doing multiplication with the negatives and positives (if given). When you get through the equation, you will end up with the solu...

How To: Determine whether a given item in a list in MS Excel

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 119th installment in their series of digital spreadsheet magic tricks, you'll learn how to determine if a particular item is in a list of items using two formulas: a ISNUMBER & MATCH function formula & a COUNTIF function formula.

How To: Use the A-A Property to determine 2 similar triangles

Dougsimmsonline shows how to determine whether or not 2 triangles are similar. Not only does he go on to show that they are but he describes step by step how to do the math to find missing angles. He does this process twice to show one set of triangles being similar and show the other set of triangles as not being similar. Doug is using a large computer touch screen as his drawing board to show you how this process is done.

How To: Determine which grater is best for the job

Gourmet editor, Ruth, tells us all about the different graters and why choosing the best grater for each job is very important. The classical grater is called a knuckle bleeder. This is because when you're at the end of the item you're grating, you have to get your hand really close to it and you might scrape your knuckles. The hand grater is easier to use and provides smaller pieces which makes it ideal for most grating jobs. A zester grater is also easy to use and provides more volume than ...

How To: Use ipconfig to determine an IP address in Windows XP

This video will show you how you can easily find out what your IP address is for a computer which is running the Windows XP operating system. You will first need to go to the start bar and click on the button which says "Run". Choose to run a program called "cmd" by typing this into the bar that appears. This will then open up a black box, where you should type in "ipconfig/all". Typing this in will offer you a list of information about the internet service you are currently using and one of ...

How To: Determine if a point lies on a line in slope intercept

In this video the author shows how to find out if a Point lies on a Line in Slope Intercept Form. He shows it by an example where he takes a point, which is an ordered pair in the form (x, y) and a line, which is an first degree equation. Now he substitutes the values of x and y in the equation and checks if both the sides of the equation match. If it matches we can conclude that the point lies on the line. By following the method given in this tutorial you can find out if a given point lies ...

How To: Determine if you have a function

In this tutorial, we learn how to determine if you have a function. You will start off with two functions and their points. The 'x' values make up the domain of the function and the 'y' values make up the range. The input values are the domain and the output are the range. If you're checking to see if you have a function, you will need one 'y' for every 'x'. This means that each value has another one that goes with it. Each of the points need to have one partner with them, no more and no less...

How To: Determine your hunting bow draw length

In this video, we learn how to determine your hunting bow draw length. The best way to do this is to use a 36 inch yard stick. Put the stick against your throat in the center, and hold it firmly holding your hand straight out in front of you. don't super stretch, just stand normally. Where your middle finger is will determine your draw length for your bow. This is the easiest way to do it and only takes a few short minutes. You can get a yard stick from a number of different stores, or you ca...

How To: Determine the empirical and molecular formulas for a compound in chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to determine the empircal and molecular formulas of a substance given percent composition. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Determine whether cantaloupes are ripe or not ripe

The cantaloupe is a troublesome fruit for some melon shoppers, because it's a really hard fruit to tell the ripeness of, like most hard-shelled melons. If you've been riddled with how to bring home the ripest and freshest cantaloupe melon, then YourProduceGuy has answers for you. See how to determine the ripeness of this delicious melon.

How To: Determine whether watermelons are ripe or not ripe

One of the hardest fruits to determine the freshness of is the watermelon. It's the biggest question in the produce department of grocery stores, so you're not the only one having problems. This video from YourProduceGuy gives you the tips to finding out what to do when picking out a fresh and perfectly ripe watermelon and the local store. There's a sweet spot for every fruit.

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