In this video the instructor shows how to graph a piecewise defined function. A piecewise defined function is a function that is defined in separate pieces. In these kind of functions, for different ranges of the value of x, you are given different small functions, all of which together make the whole function. This means your equation of the function is given in the form of smaller functions. Now to graph these kind of equations all you have to do is graph the individual equations in the sam...
This video teaches how to convert a value in Celsius to Fahrenheit in simple steps. First take a paper and marker and keep in mind a Celsius value (e.g-32) to convert into Fahrenheit. Now use the formula to convert Celsius to Fahrenheit which is F=1.8(32)+32. Use a calculator to calculate the formula and you will get the result as 89.6 Fahrenheit. Now round it off the and your final result will be 90 degree Fahrenheit.
In this tutorial the instructor shows how to complete the square to graph a quadratic function using transformations. You can do this by transforming your equation in a series of steps. First make the coefficient of the square term to one by pulling out its numerical coefficient. Now to complete the square of the first part add half the coefficient of the variable with a degree one. Now to maintain the original value of the equation also make sure that you subtract the same value from the equ...
In this tutorial the instructor shows how to factor a trinomial with Greatest Common Factor (GCF) and then how to group it. The first thing you have to do when you want to factor a trinomial is look for the GCF. First factor the numerical coefficients of the terms of the equation. Now separate out the common numerical factor and if any common variable. This leaves you with a binomial to be factored. Now to solve this multiply the numerical coefficients of the first term and the last term and ...
Slope is the change in Y over the change in X. Written out, the formula looks is as follows: (y2-y1)
This tutorial looks at how to describe a linear system without actually graphing it. In order to do that, you will need to convert both equations of a problem into the Y=mx+b format. Once you have done this, you will be analyzing the m and b values. There are a few rules to follow. If the slopes (or m) and the Y intercepts (or b) are equal, there are an infinite number of solutions (or dependent equations). A second rule is if the slopes are equal and the Y intercepts are different, then the ...
In this video the tutor shows how to simplify a quadratic formula result. You can solve a quadratic equation using the quadratic formula. The first thing you have to do when given the quadratic equation is bring all the terms to one side so that you have a zero on the other side of the equals to sign. Now the formula to calculate the roots of the quadratic equation ax*x + bx + c = 0 is x = (-b + root of(b*b - 4*a*c) ) / 2 * a. The other root can be obtained by using the minus sign before the ...
This video is describing how to solve quadratic equation by quadratic formula. The quadratic equation is given in the video and we will use quadratic formula. We will put the equation in the formula our equation is 4psquare= -23p - 15. Now add 23 to both sides and then add 15 to both sides now we will get an easy equation, 4 will be used as a and 23 will be used as b and 15 will be used as c and we have a=4,b=23 and c=15 put these values in the quadratic formula and we have the value of p=5.-...
This video starts out with a basic view of a rectangle and its dimensions. The base is 7 inches while the sides are 4 inches. It then displays the formula for finding the perimeter of the rectangle which is the addition of both bases and both sides. After the substitution of the values into the formula you can quickly come up with the perimeter. Then moving on the area, the formula is the base multiplied by the side. In this case, the base being 7 inches and the side being 4 inches you come o...
In this video tutorial it shows you how to find the x-bar by using the Z-score formula. In the beginning of this video the formula is displayed on the right, while the values that you need to plug in are on the left. Once you plug in the values and do the cross multiplying, all you have to do is get x-bar by itself on one side of the equation. This is a simple problem on using the z-score formula to find x-bar, it can help you solve more complex problems in the future.
Wondering how to use a mean and scatter plot for statistics? Just follow the few simple steps as below.
In this video the tutor explains about the concept of Equivalent Fractions and how to find them. She states that equivalent fractions are fractions with same value. She explains this with an example saying that a fraction can have many forms in their unreduced states and all these fractions will have the same value which can be obtained by reducing them. She shows that we can make an equivalent fraction of any fraction by multiplying the numerator and the denominator by the same number and go...
This how-to video is about Fourth Law of Exponents. Before going to see this let's first know what the fourth law of exponent says. The fourth law of exponents says that "any value other than zero brought to an exponent of zero is equal to one".
In this tutorial the author shows how to draw a rectangle with given base b and height h values. First she uses a ruler to draw a horizontal base line of b cm. Now she uses a protractor and marks a 90 degree angle at one end of the line, then draws a straight line of h cm which is the height of the rectangle. Now she finishes the remaining part of the rectangle by drawing similar lines of the other sides. This video clearly explains how to draw a rectangle given the values of its base and hei...
Learn how to apply the fundamental rule of proportions just follow simple few steps. First step is take two fractions and equate them. For example (Top/Bottom)=(Top/Bottom).
In this tutorial the instructor shows how to solve ratios and proportions. He gives a two step approach to solve an equality of two fractions in which the value of a variable in unknown. He says that in the first step we should cross multiply the numbers across the diagonal. In the second step we need to divide and simplify to get the value of the unknown variable. This video gives a simple two step method on how to solve ratios and proportions.
This video is about sliding an object from left to right in Flash. We will be creating a simple, core animation in Flash. First, let's import an image to our scene. Place it here. Now, let's convert our image into a movie clip. Change the frames per second value. Now, go to the frame and enter the key frame. Bring the image here. Let's rotate our image a little bit using the free transform tool. That will give more dynamic animation. Go to frame 30 and hit F6. Now, we need to add motion. Chan...
For people who are learning geometry and would like to be able to find the perimeter of a rectangle, this video provides and quick and simple tutorial which provides the formula as well as a good example. The formula for finding the perimeter of a rectangle is simple the sum of all sides, or l+l+w+w, where l is the length and w is the width of the rectangle. After attaining the values of the length and width of the rectangle, you can simply plug in the values to this equation in order to find...
In this video the tutor explains about the standard error of the mean. He starts explaining by drawing the diagram of a distribution and now he takes ten samples from the distribution and starts plotting them. He says that in theory if we do it infinite times then we can obtain the sampling distribution of the sampling mean. For the example he takes the number of samples as 10. Now depending on these values of n we can get different sampling distributions. Now he intends to find the mean of t...
For people who are interested in math or who need to know how to find the volume of a cone for any reason, whether it be homework or architecture, this video will show you how to do so. The formula for finding the volume of a cone is (1/3) pi x radius^2 x height. You can find the radius of your cone by finding half the length across the center of the circle which is the cone's base. After plugging in all the values into this equation, you will be able to find the volume of any cone when given...
ExcelIsFun will show you how to use indirect text and substitute in Excel. Select any date and product and create an intersession. Use Vlookup to look up your columns. Use the match function to find the value range. To do the same thing with dates, highlight the dates and names. You then let the name look for indirect. Your space operator tells you two ranges to find the intercept. Take the text and substitute for the dashes. Use the text function on the value and format it.
The video is a tutorial in trigonometry. The teacher teaches that the tangent or the tan of an angle is the ratio of the opposite side to the adjacent side of a right angled triangle. If one side and one angle is given then the value of the unknown side can be found by solving the equation tan of angle is equal to opposite upon adjacent side. If the angle is to be found then the tan inverse of the value is seen in the calculator.
In this video the author shows how to plot a point on the coordinate plane. He explains about the coordinate plane and shows how to read and write points to it with an example. He says that any point on the coordinate plane has an x, y- coordinate values. He says that for any point its projection on the x-axis is its x-coordinate and the points projection on y-axis is its y-coordinate. He shows how to find this out for a sample value and plots the coordinates of it. In this video the author u...
In this tutorial the instructor shows how to find the surface area of a sphere. He explains the equation to calculate the surface area of a sphere as 4 * Pi * r * r , where r its the radius of the sphere. Now if you have the radius of the sphere, by substituting its value in this equation and substituting the value of Pi, you can obtain the surface area of a sphere. If you want to compute the surface area of a sphere watch this video where it is clearly explained how to compute it along with ...
In this video tutorial the instructor explains about the concepts of standard normal distribution and the empirical rule and how to use it to solve an exercise. He starts by explaining about standard normal deviation saying that in a standard normal deviation the value of mean is zero and the value of standard deviation is one. Now he draws the standard normal deviation by drawing a bell curve on an axis. Now he points the mean and standard deviations on it. Now using these concepts he goes o...
In this video tutorial the instructor shows how to solve a single-step equation by taking the reciprocal. He says that in the equations of fractions containing a variable on the one side, you multiply the reciprocal of its numerical constant to it so that only the variable x stays out. Similarly we need to multiply the reciprocal value that we used on the left hand side on the right hand side too to maintain the equality. Now after simplification as only x is left on the one side we get its v...
In this video the author shows how to perform custom number format for turnover ratio in a Microsoft excel document. He shows how to perform custom number formatting in which he shows how to display a decimal value in words. He opens the Format Cells option and there he shows how to set the Custom option. He shows how to configure different options so that we can format the decimal value and display it as text with some meaning attached to it. In this video the author shows how to use custom ...
Here are step-by-step instructions on how to write a check. 1. Date the check, and ensure it is dated for the day you intend the recipient to cash it.
Studying to be a surgical nurse? Then here is a nursing how-to video that teaches you how to prepare for a bovine aortic valve insertion. Every cardiac surgical nurse should know the basics of this technique, follow along and see how to get ready for a bovine aortic valve insertion. These medical tips are sure to help you pass your nursing exam with flying colors. Not that a bovine aortic valve insertion is also known as an AVR. The procedure involves measuring size of aortic opening for bovi...
With the new navigation gestures in Android 10, you reclaim a lot of screen real estate that used to be occupied by the back, home, and recent apps buttons. But there's still a small bar on the bottom edge of the screen, and in most apps, it still sits atop a black background. Thankfully, an easy hack will give you true full-screen without breaking the new gestures.
Hacker's are always looking for new ways to exploit systems and exfiltrate passwords, even in hashed form. Sophisticated brute-force attacks powered by high-end GPUs can perform millions of password attempts per second. But Ubuntu and Debian users aren't completely helpless. There are ways to harden the hashed password to better defend against Hashcat attacks.
What's up readers? We have ever so slightly touched upon this concept of scope with variables but still don't really know what it means. In this tutorial we will learn the behaviors of variables existing in our programs and within functions.
Luxaholics, fashionistas and Sex in the City fans... Here lies the information needed to make the perfect cake for your next chic birthday party or bachelorette party! Learn how to make a shoebox & high heel shaped cake with step by step instructions in this three-part video tutorial. Using primarily gumpaste, fondant icing and modeling chocolate, learn how to shape the high heel sole, inseam and heel, creating a realistic looking & unique cake sure to wow your guests!
It is important to maintain a diet rich in selenium. Selenium is an essential trace mineral and antioxidant that protects your cells, boosts the immune system and helps fight infection. Check out this helpful video, and discover how to add more of this great mineral into your diet.
The video shows us how to find the area of parallelogram using geometry. Here in this video it is done by using an example where the parallelogram is given ABCD. The area of the parallelogram is base times height (bh). Here the base is given as 15 but the height is not known but it is represented by the segment BD. To find the value of h, let’s use right triangle BDC on the right side of the figure. Since base is 15 and the opposite side of the parallelogram is congruent, the hypotenuse of th...
To speed up the shutdown time for your computer, start by working on the regedit. To access the regedit click the start button. In the search box, type regedit. When the regedit comes up, click it and go down to HKEY_LOCAL_MACHINE. Click hkey_local_machine and go down and click system. Click currentcontrolset in the the system list. In currentcontrolset, click control once. In the control window click waittokillservicetimeout. In waittokillservicetimeout, there will be a value. If the value i...
Monochromatic painting challenges you to take control of value and tone in your artwork. Learn how an oil painter approaches creating an underpainting, blocking in large areas of value, and working the details. Gain tonal values in your monochromatic painting.
Chemguy AKA Rob reviews the various diagrams in organic chemistry. This is a 16 part series from this Canadian high school Chemistry teacher.
Many online users worry about their accounts being breached by some master hacker, but the more likely scenario is falling victim to a bot written to use leaked passwords in data breaches from companies like LinkedIn, MySpace, and Tumblr. For instance, a tool called H8mail can search through over 1 billion leaked credentials to discover passwords that might still be in use today.
Tell the truth. The bat picture creeps you out. You are not alone. But in reality, bats truly are some of our best friends. They gobble thousands of disease-spreading bugs a night. But they also carry viruses that can be deadly to humans. So, bats — friend or foe?
