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How To: Multiply rational expressions in two "easy" steps

In this Math Made Easy tutorial the instructor shows how to multiply rational equations. He states that multiplying rational equations is simply a process of simplifying equations, in which he says that first the polynomial equations should be factorized. He further shows how to factorize the equations by solving an example. After factorizing them he reduces the common terms on the numerator and the denominator and finally arrives at the new simplified equation. This video clearly shows the m...

How To: Derive the equation of a straight line

In this tutorial the instructor shows how to derive a straight line equation. He shows us a process that consists of two steps. In step one he uses the slope formula to obtain the slope of the line which is the ratio of difference of y-coordinates and difference of x-coordinates. Now in the step two he uses the slope he obtained in the first step and equates it two a another slope derivation which uses a generic x, y variables and a real point. Now solving this equation he arrives at the equa...

How To: Use the Cosine Law

In this video tutorial the author shows how to use the Cosine Law. He shows how to find an angle of a triangle where he know all the sides of a triangle, using the cosine Law. He uses a lower case letter to designate a side and a capital letter to designate an angel apposite to that side. He gives the formula for the cosine law using a triangle as an example. Now he goes on and demonstrates how to use a scientific calculate. He shows how to use the degree mode in the calculator to solve these...

How To: Build a deck sunroof

Decks and patios are a major source of America's entertainment and relaxing enjoyment, but they can be hot in the summer sun. They can actually be dangerous if they reflect the sun's ultraviolet rays. And running your grill during a rainstorm that arrives the same time as your guests can be a real frustration. One answer is a sunroof over your patio or deck. If designed properly, a sunroof can cut the summer sun, but still allow winter sun rays to warm the house. The sunroof shown is a typica...

How To: Perform CPR on a baby (British Red Cross)

The most basic and most important aspect of first aid is CPR. It's the one thing that is most likely to save a life. It's stands for cardiopulmonary resuscitation, which is the emergency medical procedure for restoring a person's normal heartbeat and breathing when experiencing heart failure or breathing impairment. But there's a different approach when dealing with and chest massages for babies under one year old.

How To: Perform CPR on an adult (British Red Cross)

CPR. It's stands for cardiopulmonary resuscitation, which is the emergency medical procedure for restoring a person's normal heartbeat and breathing when experiencing heart failure or breathing impairment. It's the number one way to save a life, and everyone should know it, whether you're certified or not.

How To: Properly set a table

To properly set a table for an informal four course dinner, keep in mind that a soup course, a salad course, an entree and a desert will be served. First, add the service plate or charger to the table. Place it directly in front of the guest two inches from the table. It will serve as the under plate before the entree arrives. Use exactly the amount of silverware needed to accommodate the meal. For this meal, you will need a soup spoon, a salad fork, a salad knife, a dinner fork, a dinner kni...

How To: Use a CPR Ezy in case of a heart attack

The aim of CPR is to preserve life by maintaining an adequate supply of oxygen to the heart and brain. Effective CPR prolongs a person's chance of survival until either a defibrillator arrives and can be used to shock the heart back into its normal rhythm or advanced professional life support is available. This how-to video shows you how to use a portable CPR Ezy when someone you know is suffering from a heart attack. This medical device helps you perform CPR on a victim in a constant rhythm.

News: Google's About to Take Over Your Car as Android Auto Rolls Out to Everyone

A lot more people are about to be able to use Android Auto. Google announced at I/O 2016 that you'll soon be able to use the app with only your phone, so you won't need a compatible car or third-party display unit. And if (or more likely, when) Google brings the app to iOS, Apple may lose the precious "infotainment" system battle very early in the game. The update isn't coming until later this year, but once it arrives, you'll be able to mount your phone and use Android Auto the same way that...

How To: Enable the Hidden "Double Tap to Wake" Feature on Your Nexus 6

During initial reviews of the Nexus 6, the "double tap to wake" feature was something originally slated to be present on the device, since Motorola built it and it's been a key feature of the Moto X. However, the feature was scrapped for Ambient Display, which wakes up the screen when the device is picked up or a notification arrives. So while having both could be seen as overkill, it doesn't mean we shouldn't have the option.