Subtract Search Results

How To: Understand & Use IPv4 to Navigate a Network

You may not know it, but the IPv4 address of your computer contains tons of useful information about whatever Wi-Fi network you're on. By knowing what your IPv4 address and subnet mask are telling you, you can easily scan the whole network range, locate the router, and discover other devices on the same network.

How To: Figure out a golf handicap

So, you've started playing golf, and you've started getting competitive... Figure out a golf handicap with help from this free video from expert golf site, Golf Link. A golfer's handicap is determined by two factors, which are the course rating and the slope of the golf course. Subtract the course rating from a golf score, multiply by 113 and divide by the slope, and finally multiply by .96 to find a handicap.

How To: Find your recovery heart rate

In this tutorial, we learn how to find your recovery heart rate. First, get your heart rate up by doing some sort of activity that you enjoy doing. After you have your heart rate up, figure out how many beats you have in fifteen seconds. After you have counted this, multiply it by four. Now, sit back and relax for two minutes exactly. Next, time another fifteen seconds with your stop watch and count how many beats your heart has. Multiply this number by four, then subtract the two numbers. Af...

How To: Divide decimal numbers by whole numbers in basic math

Your first step is to bring your decimal point up to the top of the equation. The you divide the whole number into the decimal number. In this instance, 5 into 1.25. 5 goes into 1 0 times, so you put the zero in the first space. 5 goes into 12 twice, so you place a 2 up top, after the decimal. Then you subtract 10 from the 12 to leave you with a 2. This then gets added on to the 5, so you divide 2 into 25 giving you 5. So your answer is 0.15. You can then do this for any whole number and frac...

How To: Solve for X in algebra

This video demonstrates how to solve for X in algebra. The equation taken for this is 2X+4=10.The first thing you have to do to solve this equation is to get X by itself on one side of the equation. In order to do that you take the number that does not have X with it and do the opposite operation that has been done. So in the equation here we have plus four so we subtract four from both sides of the equation. What we do to one side of the equation has to be done to the other side of the equat...

How To: Use the Pythagorean theorem

Pythagoras was a smart man, so smart that his mathematical theory is named after him and still used today, more than 2,000 years later: the Pythagorean theorem. It implies that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides. The Pythagorean theorem is a cornerstone of geometry. Here’s how to use it.

How To: Add Notes to Your iPhone's Notification Center for Easy Access Anytime

Confirmation numbers, grocery lists, addresses, and phone numbers are all things we need to quickly jot down on our phones, but the thing is, they're never extremely easy to access later. You have to figure out which app you wrote them in, meaning lots of needless searching and scrolling. Even if you use a dedicated note-taking app, those extra steps of actually opening the app to find a UPS tracking number can be an unnecessary pain.

How To: Detect & Classify Wi-Fi Jamming Packets with the NodeMCU

The most common Wi-Fi jamming attacks leverage deauthentication and disassociation packets to attack networks. This allows a low-cost ESP8266-based device programmed in Arduino to detect and classify Wi-Fi denial-of-service attacks by lighting a different color LED for each type of packet. The pattern of these colors can also allow us to fingerprint the tool being used to attack the network.

How To: Easily Transfer Everything from Android to iPhone

If you've just ditched your Android phone for a new iPhone, you're in luck, because Apple has a way to make your transition as simple as possible with their Move to iOS app for Android. To help make things even easier on you, we've outlined the process of using Move to iOS to transfer images, messages, contacts, mail accounts, calendars, and more over to your iPad or iPhone running iOS 10.

How To: Make Your Minecart Stations Better Than Ever in Minecraft 1.3

What's nice about Minecraft 1.3 is that it makes minecart stations so simple. Before, you needed redstone and buttons and powered rails in order to make a good minecart station. Now you hardly need anything at all! That said, if you want to be snazzy, all of the minecart stations we covered in this earlier article are still completely functional. You may also want to check out this article on how to make empty minecarts come back to you, if you want some extra bells and whistles.

Hack Like a Pro: The Basics of the Hexadecimal System

Welcome back, my novice hackers! It has become clear from some of your questions that quite a few of you are unfamiliar with the hexadecimal system, or simply, hex. The hexadecimal system is used throughout computing and if you have never studied this Base16 numering system, it may appear relatively opaque.

How To: Pythagorean Theorem

What Is Pythagorean Theorem? Pythagorean Theorem is an equation discovered by a man named Pythagoras. It can be used to determine whether or not a triangle is a right triangle and find missing lengths of a triangle. The equation is: Parts of a Triangle

How To: 9 Ways Your iPhone Can Help You Be More Productive When Working from Home

With stay-at-home orders for most of us in the US because of the new coronavirus, many of you are likely struggling to be productive and efficient when working from home. Unless you've worked from home before, it can be challenging to separate work from personal life throughout the "workday." But your iPhone can help make the transition easier and more successful.

Networking Foundations: Subnetting Based on Host Requirements

Hello everyone! I hope you are having a great day so far. Today, instead of caring about networks we are going to talk about subnetting based on host requirements as promised in my first article about subnetting. Just like in the previous articles we will jump right into the examples because that's the best way to learn.

Ingredients 101: How to Salt Your Food Like the Pros

In order to make your food taste good, your favorite restaurant is most likely using way more salt than you think they are (among other pro secrets). Which is why when you ask just about any professional cook what the biggest problem with most home-cooked meals are, they almost always answer that they're "undersalted" or "underseasoned." (In cooking lingo, to "season" food means to salt it.)

Coinbase 101: Fees & Fine Print You Need to Know Before Trading Bitcoins & Other Cryptocurrencies

Coinbase is the primary go-to for many users when it comes to investing in Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), Ripple (XRP), and more, due to its user-friendly interface. But before you join them, know that the ease of use comes with a price. Coinbase charges fees for each transaction, and your bank might even add charges on top of that. Plus, there is some fine print to be aware of.

How To: Make Your iPhone's Portrait Orientation Lock Change Automatically Whenever You Open & Close Specific Apps

I always keep my iPhone's Portrait Orientation Lock on so that my screen doesn't randomly rotate while I'm lying down. However, there are certain apps that I do turn it off for. It's kind of a pain since you have to swipe down the Control Center and toggle the orientation lock — but that ends now. Instead of doing it manually, a new iOS update can automate app orientations for you.

NR30: Next Reality's 30 People to Watch in Augmented Reality in 2018

Welcome to the first annual Next Reality 30, our list of people who've made the biggest impact on the augmented reality space in the last 12 months — and what a 12-month roller-coaster ride it's been. Apple introduced ARKit-powered apps last fall, Google launched ARCore for Android soon after, Snapchat began monetizing AR, and the Magic Leap One headset finally came out. These are historic times.