A system of linear equations usually has a solution that is an ordered pair (x,y). Sometimes that isn't the case, especially when the equations represent the graphs of parallel lines (inconsistent system) or the same line (dependent system). Learn how to solve a system of equations algebraically in this free video 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,...
The perfect solution to get your movies onto your computer! The Ripit app is simple, and does exactly what it says it does: Ripit! Just put your DVD in your drive, open Ripit, and press the rip button. Ripping your DVDs can be a useful step in organization of your movies and keeping them safe. You can scratch a DVD but a file on your Mac won't be easily hurt. Recent studies have also shown that your Mac uses less battery power reading a file on your hard drive than reading a DVD. So why carry...
In this how-to video, you will learn how to properly study for a test or for homework. The author offers a few great tips. You should avoid cramming and study well before the test date. Make a list of everything that is going to be on the test. Memorize facts and formulas. Make up questions that you think are going to be on the test. Take all the school tools you need in order to complete the test. Lastly, if you prepare well, you will have a great chance of doing well. You should try to stud...
Studying to be a nurse? Then here is a nursing how-to video that teaches you how to measure blood pressure with a manual cuff. Every nurse should know the basics of this technique, follow along and see how easy it is to take a patient's blood pressure with a manual cuff. It is important to know how to take a manual cuff reading in case that the automated blood pressure machine isn't working. These medical tips are sure to help you pass your nursing exam with flying colors.
Solve this chess study by Schultz (1941). Grandmaster Alexandra Kosteniuk shows you just how to do it in this chess video tutorial. White plays and wins. In order to win, white needs to promote his pawn down the board -- the unstoppable pawn, to get a queen in this chess endgame.
Learn from this chess video tutorial, hosted by Grandmaster Alexandra Kosteniuk, on how to solve the chess game study from the Book of Salvio (1604). White plays and wins by sacrificing his rook and moving his pawn up the chessboard to get queened. It's as simple as that. Endgame chess is a great thing to learn to become a master.
Find out how to dramatically reduce study time & increase your grades. Included is a flow chart to see exactly how to reduce your study time.
It's not always easy to get to the root of an infection outbreak. Epidemiologists study infected people, contacts, and carefully examine where the infections happened and when. In the case of a 2012 outbreak of pertussis — whooping cough — in Oregon, scientists just published an analysis of how vaccination status affected when a child became infected during the outbreak.
Move over whole wheat — white bread may be back in style after a new study shows that it may be your gut microbes that decide what kind of bread is best for you.
We've already taught you how to clench your fist to make healthier food choices, and how to make sure you eat healthily at a restaurant, but it turns out there are even more mind hacks we can use in our never-ending quest to control our appetites.
More prescriptions for antibiotics are written for ear infections than any other type of infection. A new study comparing the incidence and causes of ear infections in children between the ages of six months and three years found that the incidence of ear infections over the last decade has dropped significantly since the 1980s.
Our canine best friends could spread our bacterial worst nightmare, according to a recent study. The problem with drug-resistant bacteria is well known. Overused, poorly used, and naturally adaptive bacteria clearly have us outnumbered. As science drives hard to find alternative drugs, therapies, and options to treat increasingly resistant infections, humans are treading water, hoping our drugs of last resort work until we figure out better strategies.
The pathogen referred to as a "nightmare bacteria" is quietly adapting and spreading faster than anticipated.
In this tutorial, we learn how to know the difference: census, study, & sample survey. The census is when everyone's opinion is needed. An example is when you will see census studies happen throughout the year from the government seeing how many people live in one household. A study is when you only need the opinion of experts. This can be when companies are releasing a new product and need the opinions of doctors or dentists about it. A sample survey is when a few people's opinions are enoug...
If you are looking to improve your classical piano technique then this how to video is the place to start. You will learn how to practice and study Chopin's "Ocean" etude opus 25 number 12. This detailed lesson goes over where to place the accents, analyzes the dynamics and staccato playing technique. This piano tutorial teaches you the best way to practice it so you can Chopin's "Ocean" etude op.25 no. 12 quickly and easily. With this concise classical piano lesson you can improve your techn...
Let Grandmaster Alexandra Kosteniuk teach you how to play a game of chess in this chess video tutorial.
Most PC tower cases have the power supply mounted near the top of the case in the back. However, if you want your PSU to run a little cooler, watch this video to learn how you can mount your PSU on the bottom of a tower case, allowing it to draw cooler air from the bottom of the case rather than the hot interior of the case like a top-mounted traditional setup would.
Keep Your Word is an innovative and simple Mac application which will let the user keep track of different words - useful for anyone whose area of study gives them a lot of vocabulary words or glossary terms to keep memorized.
If high school students spent as much time on studying as they tend to spend on looking for new ways to cheat, everyone in America would have straight A's. But, cheating is so much more fun than studying, isn't it?
By connecting the dots between theory and real-life effect, two new studies offer more proof that neonicotinoid insecticides are causing extensive damage to honeybee colonies.
Several recent research studies have pointed to the importance of the microbes that live in our gut to many aspects of our health. A recent finding shows how bacteria that penetrate the mucus lining of the colon could play a significant role in diabetes.
The bacteria Klebsiella pneumoniae is a bad actor known for being antibiotic-resistant and causing a variety of serious infections in hospitals, including pneumonia, surgical site wounds, and meningitis. K. pneumoniae is something you do not want to encounter if you have a compromised immune system.
As if being pregnant did not come with enough worry, a new study found that certain antibiotics are linked to an increased risk of spontaneous abortion, or miscarriage — a terrifying finding for any expectant mother.
When just floating peacefully in the water with their brood mates, the Culex mosquito larvae in the image above does not look very frightening. But in their adult form, they are the prime vector for spreading West Nile virus — a sometimes mild, sometimes fatal disease.
After a brief reprieve, Zika fear is back with a vengeance as the US mosquito population booms. And we're just now seeing the true impact of this devastating virus, as babies of mothers infected with the virus are being born.
A new study confirms that antibiotics can prevent surgical intervention if your child's appendix becomes inflamed, potentially saving his or her life.
New research suggests the bacteria that causes listeriosis may be a bigger threat in early pregnancy than previously thought. Usually considered a danger to late pregnancy, scientists suggest early undiagnosed miscarriages could be caused, in some cases, by infection with Listeria.
Learn two quick study habits that will help increase your grades on tests and exams.
Today's word is "pause". This is both a noun and a verb. As a verb, it means to stop an action temporarily.
The possibility of severe tickborne illness is increasing as an aggressive tick from the American southeast moves up the Atlantic Coast.
While no longer native to the United States, hospitalization from malaria occurs in this country more than most would believe. Why is that, and what can you do to protect yourself when you travel abroad to regions where malaria is active?
Researchers have been studying the blood meals of flies to understand the flow of infectious pathogens in wild animals.
Transmitted by ticks, Lyme disease is a serious infection that is probably headed your way. A recent study confirms the pathogen that causes Lyme disease is now established in nine national parks in the East, including Acadia and Shenandoah National Parks.
The flash card is one of the most effective and distinctly old-school methods of studying. If you want to eschew the computer and bust out the flash cards, watch this video to learn some ways to make more effective flash cards and rock your next test.
Kids would usually rather play than do their homework, but follow these parenting tips to make studying fun for them. Determine your child's learning style, and tailor homework time specially for them. Remove distractions from the environment so kids can focus on their education and passing the next test.
Palm reading can be complicated because chirognomy, the study of the mounts of the hand, sometimes contradicts chiromancy, the study of the lines of the hand. For that reason, it's best to do a reading as a whole. In this particular video palmistry tutorial, Peter John explains the significance of the thumb, highlighting the areas on a detailed map of the hand. Watch this instructional palm-reading video and learn how to interpret the meaning behind the thumb.
Palm reading can be complicated because chirognomy, the study of the mounts of the hand, sometimes contradicts chiromancy, the study of the lines of the hand. For that reason, it's best to do a reading as a whole. In this particular video palmistry tutorial, Peter John explains the significance of the mount of Venus, highlighting the areas on a detailed map of the hand. Watch this instructional palm-reading video and learn how to interpret the meaning behind the mount of Venus
Let Grandmaster Alexandra Kosteniuk teach you how to play a simple game of chess! This video tutorial will have you up on your feet, just begging to play a game of chess with someone.
Have you gotten Case Zero for Dead Rising 2 yet? It's a DLC available exclusively for the Xbox 360, and this walkthrough from NextGenTactics will walk you through the whole thing. The first video covers the gameplay for the first three levels of Dead Rising 2: Case Zero, while the remaining parts cover the fourth chapter.
In this video, you'll get a step by step tutorial on redeeming your free iPhone 4 case. If you have an iPhone 4, you are entitled to a free bumper case to deal with the antenna signal loss problem. All you have to do is download the iPhone 4 Case app, and send in your information. There's nothing to it! Get your free iPhone 4 bumper case today!
