This video revolves around solving rational equations in Algebra 2. When you are given a rational equation, you have to find the greatest common factor and multiply all fractions to get that common factor. If a fraction already has that common factor, then no further step is n ...more
In this video the instructor shows how to factor a polynomial. A polynomial having three terms is called as trinomial. Now if you factor it you will obtain two binomials whose product will be the original polynomial. Before factoring a polynomial you need to find out if the po ...more
In this video, the instructor shows how to identify the percentage change using proportions. When a given quantity increases or decreases by certain amount then we can calculate the percentage change in the quantity, which can be either increase or decrease based on the new va ...more
You Tube User robichaudd teaches you how to simplify a complex fraction with 3 fractions top and bottom. Your result should be 1 fraction over 1 fraction. To do this you must find the L.C.D. at the top, which x cubed. That is the largest variable there. Thus, the L.C.D. at the ...more
The video shows us how to solve a system of equations with the elimination method. First write the two equations one on top of the other, as it is going to be elimination method and it is recommended to write it in that way. Here the 2 equations are x+y=-3 and x-y=1. In the el ...more
The video demonstrates the solving of radical equations in algebra. The first thing to be done is to keep the radical number on one side and the other numbers on the other side. The radical is then changed to a rational number by squaring, cubing etc. Once the roots are remove ...more
In this video the instructor shows how to solve a quadratic equation. If you have a quadratic equation with complex fractional terms and you find that a particular term is repeating then equate that term to a new variable and replace the variable in the given equation. Now try ...more
In this video the instructor shows how to convert temperature using the point slope form. In this kind of problem sometimes you are given a temperature in Fahrenheit and its equivalent in Celsius and an other temperature similarly in both Fahrenheit and Celsius. Now you are as ...more
To simplify a complex fraction, turn it into one fraction on the top divided into a fraction on the bottom. Once this is complete, you will turn the division into the two into a multiple by the reciprocal, factor, and then cancel. To make a division, find the lowest common den ...more
This video shows us how to draw a linear equation using the slope and intercept technique. First, the narrator explains how to simplify the equation in order to get the slope and intercept out. He then shows how the coefficient of x equals the slope and the constant term tells ...more
This is a very interesting mathematical instructional video on how to find rational equation with no solution. How to solve the equation and check the answer. Let us take the example m over m-3 minus 4 is equal to 3 over m-3. In this equation we get m-4m+12 over m-3 is equal t ...more
You can solve any proportion using the fundamental rule of proportions. First you must build the proportion if you are given a word problem. Decide using logic whether it is a direct proportion (more on one side means more on the other). If so, find the parts of the equation t ...more
In this tutorial, the author shows how to determine if a point lies on a given line which is in Point Slope Form. To show the method he takes a sample point order pair and an equation of a line in its point slope form. Now he substitutes the value of the x, y order pair and th ...more
This video shows you how to easily convert units. The first step you have to do is setup a proportion between a known conversion (e.g.. convert 2.5 km to m: 1km = 1000 m, => 1 km/1000 m = 2.5 km/X m). The second step you have to do is solve the equation by taking the cross pro ...more
In this tutorial the author shows how to derive a slope-intercept equation of a line given an X-Y table. He explains that the general form of slope intercept form which is y = m*x + b. Now he intends to find value of slope, i.e. m first. Now slope is change in y over change in ...more
Excel Fun will show you how to get the most out of your Excel experience by learning about pivot tables. With Excel and the latest Excel 2010 you can learn how to create a pivot table. Learn where in the system to go to find the table. Learn how to add our numbers and create a ...more
In this tutorial the instructor shows a method to compute the interior angle sum of a polygon. He gives us the formula for the interior angle sum of a convex polygon as (n-2) * 180 where n is the number of sides of the polygon. He goes and take a 6 sided polygon as an example ...more
The video describes how to find 'x' in the algebraic equation -3x + 7x - 6 = 30 The equation is solved on a white board by hand. The method shown uses the following steps: Firstly both 'x' terms are added together to get the equation 4x - 6 = 30. Then 6 is added to both sides ...more
System of equations is nothing but a system which contains more than one linear equations. This system of equations can be solved to arrive at the solution of the system. A simple system of the linear equations can be a pair of equations. To solve this kind of system you can e ...more
This video is about deriving the area of a circle of radius 'r' using polar co-ordinate. First, we draw a circle and its radius 'r'. Then draw another radius close to it, so that it forms a small triangle-like figure. To find the area of the complete circle, divide the circle ...more
In this video the instructor shows how to graph linear inequalities. A linear in a equation is almost similar to a linear equation except for the sign in the equation. Now treat the in equation as a linear equation and graph the line. So substitute the lesser than or greater t ...more
In this video tutorial learn how to graph an equation using the slope and y-intercept. To show how this can be done, the equation 4X-5Y=20 is used as an example. The first step that needs to be done is to convert the equation into the y=mx+b format where m is the slope and b i ...more
In this video you can learn how to solve linear inequalities. Understand the basics of inequalities and linear equations. In an inequality, we say that that one number is greater than (>) another number or less than (<) another. On occasion we say that something is greater tha ...more
View the absolute value of a number as its distance from zero. When you take the absolute value of a number, you always end up with a positive number (or zero). Whether the input was positive or negative (or zero), the output is always positive (or zero). For instance, | 3 | = ...more
This video is about subtracting mixed numbers and renaming. 1. Start on the right side of the problem. 2. Find the LCD (least common denominator) for the fraction. 3. Create an equivalent fraction. 4. Bring whole numbers over to the equivalent fraction. 5. With the new eq ...more
The 18th puzzle is called "Synapses". See how to solve it in Assassin's Creed 2. Code wheel puzzle: Your first clue is to line up 5 with a single tree-looking symbol. The key here is the weird-looking equation on the left, which offers a hint as to the progression of the symbo ...more
Watch this instructional magic card trick tutorial to learn how to perform the binary routine. This is an original series of user-created moves. There are 9 phases of the Binary Routine, 6 of which are false, and the other 3 are closers that involve a color card change at the ...more
In this video you can learn how to find the area of a hexagon. Visualize that the hexagon is made up of six equilateral triangles, with each side of the hexagon as the base for a different triangle. Determine the length of any triangle side by measuring it. Each side should be ...more
Apple has once again improved functionality of Siri, their personal voice assistant for iPad and iPhone, in iOS 9—and this update is a big one. You can now use Siri to find photos based on location and date, set up contextual reminders, find your friends and family, and more. ...more
If you haven't read the last article, feel free to stop by and give it a read, but abstaining from reading it will not, for the most part, be detrimental to your understanding. Today we are going to explore some of the inner workings of Bitcoin. As we previously learned in th ...more
It's that time of the year again when scores of students are flocking to stores for school supplies. Pens, pencils, books, and for math students, calculators. Graphing calculators like the ubiquitous TI-83 (and 84) series have been a staple of high school and college math cla ...more
Ralph Waldo Emerson once observed that "the seed of science" was "wonder," and taking a look at this nine-layer liquid tower from Steve Spangler's Sick Science! channel, one can't help but do just that — wonder. How is this possible? Is this magic or what? While it's not exac ...more
Solving Equations with Fractions Using Addition In our first example, our equation is b - 11/10 = -13/5 We need to find out what the variable, 'b', is. A variable is a symbol that stands for an unknown number. To do so, we have to isolate the variable, meaning that we have t ...more
What Is Scale Factor? Scale factor is the ratio of the length of the scale drawing to the corresponding length of the original object. Solving Problems We are told to find the scale factor when we are given the original and new dimension of an object. The formula for questi ...more
As was mentioned by the great OTW last week, TOR, aka The Onion Router, has had its integrity attacked by the NSA. In an attempt to reduce the anonymity granted by the service, the NSA has opened a great many nodes of their own. The purpose is presumably to trace the origin of ...more
I am an English major physically allergic to all algebraic formulas, so you're unlikely to get any help from me when it comes to solving any expressions. But in the glorious technological age we live in, there are plenty of apps that actually make math and problem solving fun, ...more
Going out to dinner on a Saturday night can be more trouble than it's worth when you find yourself waiting for hours on end just to be seated. Thankfully, Google Maps has some very useful data that can save you from a headache the next time you head out to your favorite restau ...more
As an avid reader, I come across a plethora of words I don't know, but my iPhone is always right there to help figure out their meanings. If you're reading an article or email directly on your iOS device, just highlight the word in question and tap on the "Define" option. If ...more
Gender standards are entirely pervasive. We raise our sons to be masculine and our daughters to be feminine, which perpetuates the gender role formula when they grow up to be parents and raise their own children. Part of this whole equation is that boys are supposed to remain ...more
If I were a math major, I'd probably be rolling in dough somewhere in Silicon Valley right now, but since multiplying numbers and figuring out tangents gives me panic attacks, I went the English route... pays much better. Still, I never would have graduated if I didn't pass a ...more
All of my hacks up to this point have been operating system hacks. In other words, we have exploited a vulnerability usually in an operating system service (SMB, RPC, etc.) that all allow us to install a command shell or other code in the target system. As I have mentioned nu ...more
Since launching Google Lens as a a Pixel-exclusive feature in 2017, Google has not only expanded the availability of the tool to Android and iOS, but also built upon its functionality. Now, in addition to translator, tip calculator, personal shopper, and tour guide, Google has ...more
When we are building programs that communicate over a network, how can we keep our data private? The last thing we want is some other lousy hacker sniffing our packets, so how do we stop them? The easy answer: encryption. However, this is a very wide-ranging answer. Today we'r ...more
One of my favorite things about cocktails is that they're so diverse. They can be sweet or savory, filling or refreshing. And they can take advantage of nearly any ingredient imaginable, including egg whites, smoked ice, flavor cubes, and even beer. As a card-carrying member ...more
If you've ever used IFTTT, you know how well it can automate your online world. The premise is simple—If This, Then That—but the results are powerful. From automatically printing images based on hashtags to getting around Twitter bans, the service is quite useful with a wealth ...more
Particular vulnerabilities and exploits come along and make headlines with their catchy names and impressive potential for damage. EternalBlue is one of those exploits. Originally tied to the NSA, this zero-day exploited a flaw in the SMB protocol, affecting many Windows machi ...more
Bone loss and belly fat may no longer be certain fates of menopause, thanks to new research from an international team of scientists. Researcher Mone Zaidi from Icahn School of Medicine at Mount Sina and colleagues describe the discovery of an antibody that reduced fat and in ...more
The Shadow Brokers, a hacker group known for its dump of NSA hacking tools in 2016, has just leaked their remaining set of data which implies that the NSA compromised SWIFT, the global provider of secure financial services, to spy on banks in the Middle East. The hackers have ...more
Jostled in the airport, someone is coughing in line. The air looks empty but it is loaded with microbes that make their way into your body. You get sick. You give it to your family, and that's pretty much it. But what if you were so contagious that you spread it to your entire ...more
Cortana, Microsoft's voice-activated personal assistant, originally launch on Windows Phone, but is now built directly into Windows 10 complete with "Hey Cortana" voice search (take that, Apple). It can help you locate files, set up reminders, control music. Don't Miss: How t ...more
NOTICE: Ciuffy will be answering questions related to my articles on my behalf as I am very busy. Hope You Have Fun !!! Hello Guys, Welcome to my tutorial and in this tutorial, We are going to talk as well as know of the possible dangers of metadata in our day to day images. ...more
YouTube is the third most popular website in the world, after Google and Facebook. Millions of subscriptions happen each day on YouTube, with over 800 million unique users visiting each month. In that timespan, roughly 4 billion hours of video are watched, with 72 hours of vid ...more
Google's Pixel phones claimed the top spot in our ranking of the best phones for rooting, but they do have one drawback from a modder's perspective: Because of their A/B partition layout for seamless updates, the devices don't have official support for Magisk. Thankfully, thou ...more
With all of the bare-bones setup out of the way in our Mac for Hackers series, your Apple machine should be ready to run a significant amount of pentesting tools. We can pull tools from GitHub and compile them, we can pull dependencies or tools from Homebrew, we have both Pyth ...more
The world of augmented reality has seen a myriad of different products, from sensor-laden smartphones to robust holographic headsets, but Google Glass's failures nearly killed the middle ground. Based on our hands-on time with a prototype, LAFORGE Optical did what Google coul ...more
A new technological movement without the technology itself is just an idea sitting and waiting. Once the technology is present in the equation, movement forward can begin. This is how many of us see the head-mounted displays (HMDs) and smartglasses that have recently entered t ...more
Brand loyalty is one of the main factors behind our decision to choose a particular mobile device, but it doesn't have to be the entire equation. Educated consumers know that certain devices simply fit their budget and usage better than others, which means you can't always let ...more
The Calculator app on your iPhone may seem boring and basic, but there are a few interesting tricks worth knowing. You can ask Siri to perform calculations for you, long-press on results to copy them, long-press the field to paste numbers in, and swipe left or right above the ...more
Contrary to popular belief, augmented reality apps have been available for a while now. I remember using the Layar app (still available for iOS and Android) to explore nearby businesses and landmarks with varying success via an early-generation Android handset. It would be ha ...more
Even though my high school days are long behind me, I still find myself waking up in a cold sweat worrying about what my GPA is and what college I'm going to be able to get into. During those days I had to rely on coming up with my own equations to figure out my GPA between gr ...more