Have a passion for photography but know nothing about the basics? This video might be a great place to start on the topic of shutter speed. Shutter speed is the amount of time that the film, or your digital sensor, is exposed to the light. Whether it be outdoors, at night, or low indoor light, the shutter speed allows your camera to take a photograph with the correct amount of exposure in reference to how much light is readily available in your setting.
In this video, we learn how to subtract rational expressions. To start, you will need to find common denominators. To do this, factor out the denominators in the fractions on both sides of the equations. Now you need to build the lowest common denominator for these two fractions. To do this, take the first denominator and take whatever is missing from the second. After you do the math for this, you will build new fractions with the common denominator as the denominator. Leave the denominator ...
In this tutorial, we learn how to add rational expressions. When you have two rational expressions, you will first need to factor every denominator. After this, find the lowest common denominator from all of them. After this, rewrite every fraction so it has the lowest common denominator for the denominator. Leave it in factored form for the denominators. Multiply the top and the bottom to find the answer for each of the fractions in the equation. When finished, make sure you find the most si...
In order to add mixed number in fractions, in a math problem, you will need to focus on the denominator. The denominator is the lower number in the fraction. The top number is called the numerator.
In order to simplify complex variables, you must first consider the numerical values separate from the variable. In the case of 24x/48x, you would look at the numbers alone to see if they have any factors. These numbers have the number 6 in common. So, divide it by 6. This will give you 4/8. This still requires some simplification. Two is still a factor for both. So, divide it again by four. This will give you 1/2. Now, if the numerator was raised to the second power, in the original equation...
Learn how to take a quadratic equation in standard form and change the trinomial into a binomial product. Using the zero product rule, the zeros of the graph can then be found. The grouping method is effective when the leading coefficient (the number factor of the squared term) is some number other than 1 (one). From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easi...
A factoring problem that has to be solved by grouping is easy to identify, because you can always identify if there are any similar terms in a polynomial. Now, if you find any variable common in any terms pull them out as the common leaving the rest of the terms. After pulling out the common terms you can group the rest of the polynomial. Be careful while pulling out signs. Pulling out a positive number does not effect the signs of terms in the polynomial, where as pulling out a negative numb...
Radicals are square roots which are not integers; the square roots of 2 or 3 are examples of radicals. The presenters show simple ways of how to add and subtract such radicals. They explain that by using the method of factoring, the addition or subtraction is made very easy. If the square root of 8, for instance, is in some addition sum, it can be factored into the square root of 4 times the square root 2. Since we know that the square root of 4 is 2 this can be simplified to be 2 times the s...
In this video the instructor shows how to simplify radicals. A radical is nothing but another name for a square root. To find the square root of a simple number the first thing that you need to do is factor it. If you need to compute the square root of a number, you first need to find a number which multiplied by itself gives the original number under the root. For example, to find the square root of 9, you need to find a number which multiplied by itself gives 9. Here the answer is 3. When 3...
This is a great instructional video on how to do inspect a boiler at home. A home inspection must include the boiler and heating system. What you need to look for are corrosion, pressure and blockages. When you buy or sell a house it is better to go in for a boiler inspection. The condition of a boiler depends on many factors. The age factor is also one of the reasons that cause the efficiency of the boiler decrease considerably. If there is some leakage in the pipes it might affect the press...
This video shows the method to add rational expressions with different denominators. The first step in this process involves finding the LCD. After this is done, the numerator and denominator are multiplied by a specific number so that the fractions are rewritten with common denominators. In the second step the numerators are added or subtracted according to the problem with LCD in the denominator. Simplify the numerator by adding or subtracting like terms. After this, we get a rational expre...
The video describes the basic process of multiplying two rational expressions. The problem illustrated in this video involved multiplying rational expressions of monomial terms with integer coefficients. As with the other example problems, we follow the steps of: factoring, canceling, and multiplying. Because these terms are monomials, no factoring is required (but we still state it as a step for similarity to solving other problems). We then find the greatest common divisor for both terms to...
One can learn, from watching this video, how to multiply and divide fractions. Prof. Alexander gives a discourse on multiplication and division of fractions in a simple, easy way. For multiplication, one should first look for highest common factor in the numerator of one fraction and the denominator of the other, and vice versa, and if found, carry out the reduction by that factor. Then the numerator of one fraction is multiplied by that of the other fraction, the same operation is carried ou...
This video will show you how to carry out multiplication of fractions using cancellation, which will make your fraction multiplication problems simpler to solve. You will need to look at the numerator of the first fraction and the denominator of the second fraction and see if you can find a common factor between the two numbers. If one does exist, you can simply divide both numbers by that common factor and simplify. Repeat this for the other numerator and denominator and if possible, your fr...
This video teaches you how to use APT (Arbitrage Pricing Theory) models and formulas. This video shows two specific parts of the APT models the first being the after the fact version and the before the fact version. The before the fact version is focused on as being the most important which is used to calculate expected returns to calculate risk. It is discussed how flexible this model is and how different factors can be moved in and out of the formula and how each different factor is used. T...
Learn how to knife someone in the face without using digital effects with this video tutorial. You will learn how to perform this effect without needing a computer and without actually hurting someone. You will need a hat and two identical knives. Cut the blade on one of the knives very carefully. Next, affix the knife to the hard hat or whatever hat you are using for this trick. The actor throwing the knife should pretend as though he is throwing the knife, but he won't actually be doing it....
This video shows us how to make a blooming paper flower. To start, you shall first draw a flower on your computer, using paint or other similar program. The flower should be simple, a circle with eight identical pedals arranged around it. Print your drawing and, using a pair of scissors, cut your flower out leaving no excess paper. Take each pedal and fold it inwards towards the center of your circle. Now, get a bowl that will easily accommodate your flower and fill it with enough water to al...
Last week, iOS 12 developer beta 7 was quickly pulled upon release, due to complaints of poor performance and instability issues. While Apple tackled these bugs with the release of developer beta 8 two days later, testers are seeing beta 7 again in their Software Update settings. Why is beta 7 back, and, more importantly, is it safe to download?
In this video, we learn how to play "Lazy Eye" by Silversun Pickups on guitar. This is a riff based song, so you will need to learn how to use a lot of riffs to play it. First, play the open 11 and open 9 chords, which are going to be the most common in the entire song. The riffs are structured as two measures each with four beats. Each should be almost identical, so play it out to see if you have the sound correct while you are playing. Continue to play the song all the way through, keeping ...
This video tutorial is in the Music & Instruments category which will show you how to sing octave and unison. Unison singing is two or more people singing on the same note. The singing has to be in sync. It is important to make sure that the phrasing and the lines are together. Also the tones should be identical. One should not be too loud or overbearing. Octave singing is like unison singing except for the fact that one person will be above or below the other person in terms of tones and not...
In this clip, learn all about prosopagnosia, otherwise known as "face blindness". This condition is rare and occurs at different levels of severity, usually as the result of autism or brain damage. Recently, Amanda Green graduated from high school in Minnesota despite her inability to remember or recognize people.
This video is about how to make duct tape flip flops. For this you need cardboard, scissors, and three different colored tapes. Follow a few easy steps: cut two identical slipper shapes out of cardboard. Paste the first colored tape on the cut pieces. Fold second colored tape three times to make it thinner. With the help of the scissors create a hole and pass the second colored tape through it. Paste the tape at the back. With the last tape, strengthen the joints above the hole.
This video shows you how to make a crunchy shrimp sushi roll. The first step is to roll out the rise of a stick roller. You then lay seaweed down over the rice and add the type of meat of your choice to the roll. You then use the roller to compress all of the content together correctly. You then cut the roll into 16 identical pieces to complete the procedure. This instructor has many other videos on similar ways to make this type of sushi.
This is origami, but it's more of a work of art. A perfect 3D mathematical kusudama, which is created by sewing multiple identical pyramidal units together to form a 3D Japanese paper model.
Two-factor authentication (also known as 2FA) adds a necessary additional layer of security to your username and password in many important apps. On Instagram, 2FA requires you to confirm it's you attempting to log in, with a special code sent to you via text message. Enter the code and you're in ... but what happens when you need to log in and don't have access to your phone?
If you didn't get the memo, passwords aren't enough protection for your online accounts. Even a long and complex password offers only one line of defense which can falter. Two-factor authentication adds an additional layer, bolsters your defense, and decreases the risk of your account becoming compromised.
Timing your cooking is everything. And if you happen to be a mom who works full time and then flies back home to prepare dinner for your family, then making sure you hard boil your eggs for five minutes while you bake your pie for half an hour can easily turn into a burnt mess if you're not careful.
In this tutorial, we learn how to determine if lines are parallel or perpendicular. You will be given two straight line equations. First, remember that parallel lines have equal slope, identical to each other. Perpendicular lines have negative reciprocal slopes. For example, 2/3 and -3/2 would be a perpendicular line. If you think of parallel lines, then you can graph them to see what they look like when written down. Then, graph the other lines to see what they look like as well. Once you un...
In this tutorial, we learn how to knife someone in the face with film effects & tricks. This effect is mostly done in the camera and not in computer software. First, get two identical knives and a hat you don't mind ruining. Then, remove the blade from one of the knives and fix it to the hat. Once you have the knife set up, put your actors in place. When you do this part, use caution to make sure you don't throw the knife at anyone. Throw this into the air, then take the shot to the person wi...
In order to make a neoprene necklace, you will need the following: neoprene, scissors, end caps, clasps, glue, and 2 pairs of pliers.
In this tutorial, Laurie Lee-Partner teaches us how to renew a US passport. First, you can only renew your passport if you have the current one and it expired less than five days ago. You will first need government form ds-82 and remember to sign it in black or blue ink, then send it in. Next, you will have to send in your passport that has already expired or is going to expire. Next, you will need two identical passport photos that have been taken in the last six months. They must be in colo...
In order to combine like terms, you need to look at the variables. Terms can only be combined if the variables are all identical. The first thing that you would have to do is look for matching variables. In the example, x + 2x5 + y2 - 9x - 2x5 + 5y2, you should try to see which ones match. Then, group them together. Match the x's with the x's and the y's with y's. Therefore x - 9x = - 8x. 2x5 - 2x5 = 0. Y2 + 5y2 = 6y2.
We are shown by a nursery manager how to grow Paper White Narcissus. While not hardy outdoors they are simple to grown indoors. We are shown how to grow in a vase or pot. For the vase, pebbles are placed on the bottom then about two inches of water. The bulbs are put tips up roots down, then a little more pebbles on top. The potted version is filled with a moist soil and water mixture. The bulbs are placed identical with soil lightly on top. With the pot a flowering support structure is place...
The box requires 2 6"x6" sheets of paper in 12 colors, that is 24 sheets in total, as well as one 6.25"x6.25" and one 6.5"x6.5" piece of paper, both preferably of the same color. Construction will also require some paper glue at certain points. The construction of the box is sectional; there is an outer box, with the inside "concertina" mechanism formed from 12 identical units glued together. The sectional nature of the construction would lend itself well to people working in groups in a clas...
Many sites do not use any fancy Content Managment System (CMS) to generate their pages, they are just just good ol' static HTML content. A site for your grandmothers pie baking business probably only has a few pages, perhaps a homepage, about page, and contact page. Each of these pages has different main content, but much of it stays exactly the same, like the header, navigation, and footer. Think of these sections as "modules" that you can easily use PHP to insert into the page. This way, ma...
Eight days ago, Apple pushed out iOS 12.3 public beta 4 for anyone who wants to try it out. Now, there's a new version, iOS 12.3 public beta 5, released May 7, less than an hour after the developer software update. Just like it's developer version, the fifth iOS 12.3 beta for the public is a simple update with seemingly under-the-hood changes only.
In this video, Sierra Snowboard gives us some tips on how to select the snowboard that's right for you. Each board comes in a number of different sizes, and most boards come with a size chart specific for that board. These charts can be vague, but are good starting points for selecting your size. One thing to consider is your bossy type. The weight of the rider is the primary factor in selecting the size of a snowboard. You'll notice that the height of a rider is not listed on a size chart. I...
Sewing is an expensive enough hobby without having to factor in repair costs, as well. You can save money (and have more cash to spend on fabric and notions!) by fixing your own machine at home. This video shows you how to clean and fix the bobbin case area, which can often get cluttered with lint and fuzz.
If you're like us, you always begged your parents to let you get a parrot (What? They make you look like a pirate when perched on your shoulder), but they never consented because of the noise factor.
Learn how to choose ladies underwear. There’s a lot more to picking a pair of panties than thinking they look cute in the store. This video outlines all the different factors in choosing the perfect panties.
