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 value of the quantity. To solve these kind of situations you should know that the ratio of amount of increase (or decrease) of an amount to its original amount is equal to the ratio of percentage increase (or decrease) to ...
In this video the instructor shows how to use proportions to solve fractions. When you have a proportions problem with an unknown term, cross multiply and divide it to get the value of that unknown term. For example if given 7/8 = m/4, cross multiply 7/8 with 4, giving 7/2 which is the value of the unknown variable m. So if two quantities are proportionate then you can equate them as shown in the video and cross multiply to get the value of any unknown variable. Proportions are just fractions...
In this video, one teacher talked in detail about how to solve absolute value functions and how to translate different absolute value functions from one point in the matrix to another one horizontally and vertically. If the function is y=A|x-h|+k, generally, the diagram is symmetric based on the line of X and can be moved vertically based on k. The teacher gave several examples to explain how to illustrate the absolute value function. He started with a simple one: y=|x-h|, then continued with...
Here Mr Misonet tries to teach to compute circumference of a circle when radius is given. First he convince you the formula. The circumference of a circle is proportionately equals to "pie" times of its diameter,where the value of "pie" is equal to 3.14 and diameter is equal to two times radius. Then he puts the value of the diameter of the given circle and calculate the value of the circumference and also make you understand how to multiply the numbers with decimals. And lastly he makes your...
Simonc1973 teaches you how to work out the circumference of a circle. You start with a circle and draw a line across the circle. That's called the diameter. You multiply the diameter with Pi, which is 3.141. The video is even more amazing being taught by Harry Chapple, a 4 year old MENSA member, who is a maths child genius. He simply takes the ruler, measures the diameter and then calculates the result of multiplying it by Pi's value. The common value for Pi is 3.14. For very accurate results...
In this tutorial the instructor shows how to find the x and y intercepts of rational functions. Finding the intercepts of a rational function is similar to finding the intercepts of other normal equations. You can find the x intercept of the equation by setting the value of y to zero and solving the equation. Similarly you can solve the y intercept by setting the value of x to zero and solving the equation. Now while solving this rational function for intercepts if you face a situation where ...
Even seasoned users of Excel might not know that you can use the COUNTIFS, DCOUNTA, and SUMPRODUCT functions to count the number of entries that fall between the values given by two other cells. Well, you can. And in this Excel tutorial from ExcelIsFun, the 545th installment in their series of Excel magic tricks, you'll learn how to do just that.
In this Excel magic trick video the tutor shows how to perform reverse two way look up for date and time columns and row headers. In this tutorial he shows a spreadsheet that contains dates in columns and times of a day in rows which makes up a small table schedule. Now he shows how to use those values of the cells in that schedule table and summarize and print out the values based up on a name or some other text value. He also refers to a previous video of his which he says to watch to get g...
In this arithmetic basics tutorial the author shows how to find the percentage of a number. He says that hundred percentage of number is the same number. He says that if we find the percentage of a number where the percentage is less that 100, then the value of the number reduces. Similarly if we find the percentage of a number where the percentage is more than 100, then the value will be more than the original number. He says that to find the percentage of a number we need to mark a decimal ...
In this video by Task Tutorial we learn how to create a simple text effect in Flash. The first step is to create the text you want to use. Then use CTRL-B to break apart and distribute to layers. Now, convert your letters into movie clips using the menu options. Then add key frames and edit Alpha values in all of the letters. Alpha must be 0. Then add motion to the values and at frame 10 add a key frame. And at frame 15 add another key frame. Next use the free transform tool to move the text ...
In this video tutorial the instructor shows how to solve equations by the comparison method. In this method he isolates either the x or y variables in both the equations and now compares the other side of equations directly to derive the value of the other variable. Now this derived value of the variable can be used by substituting it in one of the original variables to derive the value of the other variable. He goes on and shows how to do this with an example by solving it. This video gives ...
In this Excel magic trick video the tutor shows how to perform reverse two way look up for date and time columns and row headers. In this tutorial he shows a spreadsheet that contains dates in columns and times of a day in rows which makes up a small table schedule. Now he shows how to use those values of the cells in that schedule table and summarize and print out the values based up on a name or some other text value. He also refers to a previous video of his which he says to watch to get g...
In this video tutorial the instructor shows how to find Z with the Z-Score formula. He uses a sample problem to show how to find this. He tells you the formula for z which is a real simple formula. Now he notes down the formula on the board and brings in the example problem with sample values. He substitutes the values in the z-score formula and solves it finding out the z value. This video shows how to find z using the z-score formula and also demonstrates the formula using a simple example.
In this video the instructor shows how to convert between different metric units. He shows a three step approach to do this. He shows a hierarchy of units arranged from millimeters to kilometers etc. Now he says that the first step is to identify the current units of the values. Next you need to identify the units you want the value in. Next he asks you to see which direction you have to move in the graph and by how many places and now he says that to convert the value in the new units you ne...
To find a vertical asymptote, you are trying to find values of x that produce 0 in the denominator but not in the numerator. If 0/0 occurs, that means you have a "hole" in the graph. A vertical asymptote is a place in the graph of infinite discontinuity, where the graph spikes off to positive or negative infinity. To find the vertical asymptote, set the denominator equal to zero and solve for x. Check that the values also do not give a zero in the nominator. If the values work, you have found...
Watch this video to learn how to convert improper fractions to mixed numbers. For example, follow these steps. First step is one fraction value. For example 7/3. Second step is divide the numerator by denominator means when 7 divide 3 you can get remainder as 1. Means 7 before value can multiply with the 6 so you can subtract 7-6=1 that is remainder. Multiplied value of 3 nothing but 2 is multiplication of the mixed numbers remainder take it as a numerator and denominator is always take it as...
Microsoft Office Excel 2007 spreadsheet manager is a powerful tool that enables information workers to format spreadsheets, as well as analyze and share information to make more informed decisions. In this MS Excel video tutorial, you'll learn about using Excel to calculate average values and to pick max and min values. For more on this handy feature of Excel, watch this how-to.
Check out this informative video tutorial from Apple on how to format data values with the format bar in Numbers '09.
Faraday Future's all-electric super sports car concept attracted a lot of attention at CES earlier this year, but now it is struggling to replace key driverless engineers and program directors who left the company amid its recent financial troubles.
Ever wanted to perform a magic trick but didn't really have the hand eye skills most magicians seem to have? Always thought magic can be performed only by face-to-face and not long distance (say over the phone)? Well think again as I teach you how to do the Mathematical card trick "The Power of Three"
!!! READ THIS FIRST !!! - 4 april 2009 -
This software tutorial shows you how you can blend three differently exposed images using Photomatix, and then demonstrate how to use some basic Photoshop techniques to touch-up the resulting image. [Note: the Flash overlay in this video doesn't sync completely with the audio; pausing for a second and then resuming it fixes the problem.]
This video tutorial is for educational purposes only. See how to pick a normal lock with a tension allen wrench and a small screwdriver.
If you saw my last tutorial on retiring early and wealthy, you now know how anyone can invest a small amount of money over the course of their life, and by exploiting compound interest, achieve an extremely comfortable and easy going retirement. In Part 2, we are going to dive into something a little more risky: Tax liens.
Feeling comfortable or at home means living in an atmosphere where you are accepted. Some people moving abroad worry about getting adjusted to the new social environment or the western culture. You may have left your home to make big business, excel in your career, get married, meet a relative/friend, discover new places, or for any good reason.
It is said that the best way to avoid detection when hacking is to leave no trace, and often that means not touching the filesystem at all. But realistically, in most cases, it's impossible not to interact with the filesystem in one way or another. The next best thing to do to throw off any investigators is to change the file attributes to hide activity. We can do this with Metasploit's Timestomp.
In previous tutorials we have encountered these things called pointers and addresses but we still don't know what they really are. Let's learn a bit more to clear things up.
In this article, we will explore the basics of radare2, a powerful package that comes with Kali. We are going to write a simple program, and then disassemble it, to see what is really doing in the processor.
If you love computer pranks, this is one of the easiest ones to pull. This video will show you how to remove the Shut Down button from the start menu in Windows XP. Actually, it does't remove the shutdown button, it just disables it, giving the user a restriction message, stating "This operation has been cancelled due to restrictions in effect on this computer. Please contact your system administrator."
First of all you need to a set up deck. You need to learn about two things. First you need to learn about calculating the numerical value of the card and also work out the suit the card. First take out a card and lay it face up. This is 4 of clubs. The rule here is that next card shall be 3 more in numerical value because this deck is a set up. So pick the next card that is 7(4+3) of hearts then 10 of spade (10+3) and then king of diamonds (10+3). Now remember the phrase "chsd", c for club, h...
This video tells you how to draft an equation in point-slope form. Consider the equation (y+4) = 2(x+7) for example. The formula for the point-slope form is (y-y1) = m(x-x1). To plot the graph you have to identify m the slope, the x intercept x1 and the y intercept y1. In this equation the slope is 2 and (x1,y1). The x intercept according to the formula is -x1 but the given value is +7 so you have to figure out what will give you +7,only -(-7) can give you +7 so the point is -7 and now the y ...
In part one of this two-part tutorial, Aharon Rabinowitz introduces you to Exponential scale, a keyframe assistant used to counter the issues that occur naturally in After Effects when scaling from very high values. In the second part, you'll learn how to ease the values of Exponential Scale to create a smooth end to your layer's scale animation. This is a better way to create easing in and easing out effects on animations. Fix scaling issues in After Effects - Part 1 of 2.
Welcome back! In the last iteration of how to train your python, we talked about functions, and we even made our own! We're going to move on to more types of data arrays (much like lists) in today's discussion.
In python, or any scripting language for that matter, there are certain things that you will carry with you throughout your entire scripting career. Some of the most basic things that you will keep with you are output, variables, and their value types. We'll start by going over output, then cover variables and their types. So, let's get started!
Security is a priority for many when they first set up their mobile devices. Nobody wants to have a stranger or nosey friend go through their phone and discover risqué photos or embarrassing text messages. These days, the closet is gone—everyone keeps their skeletons in their phones.
Have you ever fallen victim to a clever Jedi mind trick? Don't worry. It happens. There are evolutionary reasons as to why our brains sometimes give into the oldest tricks in the book. Fortunately, the more you understand the tricks of a salesman, the easier it is to avoid their gripping psychological influence. Clue #1: Too Much Specificity
Find out how everything in a chemistry lab works, from pipettes to burners to recrystallization to storage. You'll get precise instructions on how to work and perform certain scientific duties in the chem lab, whether it's chemical or just ordinary high school science.
Find out how everything in a chemistry lab works, from pipettes to burners to recrystallization to storage. You'll get precise instructions on how to work and perform certain scientific duties in the chem lab, whether it's chemical or just ordinary high school science.
Don't let Bejeweled Blitz get the best of you. Show it who's boss and get the highest score possible. Of course, you'll need Cheat Engine to overpower the game, so make sure you have Cheat Engine 5.5 or higher and check out this video for the hacking Bejeweled Blitz (10/09/10).
Do you need to lock the door but don't have the keys? This may happen if you are sharing your keys with someone else, staying at a friend's house, or for a variety of other reasons. Check out this video for a sneaky way to secure that door tight without even sticking a key in the lock.
