Square Foot Search Results

How To: Solve a quadratic equation by completing the square

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 easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve quadratic equations by completing the square in intermediate algebra.

How To: Measure your foot & calves for proper shoe fit

This is a video guide for measuring your foot and calf size correctly. This is important in order to properly fit shoes. It's a video intended for athletes and individuals sensitive to their foot and leg health. This is brought to you by a retailer that fits wide or narrow feet with proper shoes. You'll need a wall and a measurement guide. Measure for both feet and sometimes you have two different sized feet.

How To: Solve equations involving square roots

Equations involving square roots are difficult to solve because of the complexity involved in performing operations on the square root terms. But you can follow a series of steps to solve these problems easily. To solve these kind of problems first isolate the square root term on one side of the equation and the non square root terms on the other side of the equation. Now in the next step square both sides of the equation. This gets rid of the square root on the left hand side and the equatio...

How To: Square up a quilt block

This video demonstrates how to square up a quilt block. Once you have your quilt blocks made up you have to square them so that they are all even sided and the same size. Take your most uneven sided square and lay it down. Place a square ruler over it. Line the ruler with the sides. Once you've measured the square determine how much should be cut from each side. Use a rotary cutter to cut each side down so it is even. Then lay the square ruler over the square again to measure your success. Re...

How To: Begin playing Sudoku

Jacky Liao and Tony Liao describe the main attributes of Sudoku and provide tips on how to solve the puzzle. Sudoku is a popular puzzle just like crossword. It is a puzzle of a 9X9 square sub-divided into 3X3 squares. You have to fill each column and row with digits 1 through 9 in any order. Each 3X3 sub-square must include all digits 1 through 9. Every Sudoku game starts with a few of the squares filled in. The more squares that are filled in the easier it is to play. As you fill in the squa...

How To: Simplify square roots in math

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...

How To: Stretch, shift & reflect the graph of a square root

Professor ElvisZap teaches you how to stretch shift and reflect the graph of a square root. A square root function is the opposite of a squared function. You start with y=square root of (x-1) it becomes 0<=x-1. then 1 <=x. You use the graph and solve it as you would for any function using small values first, then you have y=square root of x - 1, the domain 0<=x. This shifted the graph down 1 unit. 0=square root of x - 1, 1=square root of x, 1=x. Then the range is [-1 + infinity). Continue in ...

How To: Solve quadratic equations by square root method

In this video the instructor shows how to solve quadratic equation by the square root method. The square root property of equations states that if k is positive and a*a = k, then a is equal to square root of k or -1 times the square root of k. So to solve a quadratic equation by square root property first get the equation in the form of a*a = k. Now apply the square root property explained in the previous step to get the result. The instructor now demonstrates these concepts by solving some e...

How To: Graph x squared & the square root of x

In this video the instructor shows how to sketch the graph of x squared and square root of x. The first equation is the x squared which is y = x * x. Now to sketch this take a sample values of x and substitute in the equation to get the value of y. Similarly find the set of points for the equation. Finally plot these points and sketch this graph which is in the form of a parabola. The curve is in the form of alphabet 'U' with its vertex at the bottom. Now similarly take the square root of x e...

How To: Square expressions involving radicals

Here we look at squaring expressions that involve radicals because people tend to make some common mistakes while solving such expressions. Take 5 times the square root of y quantity squared, the answer here is not 5y. Here's the reason, square means to multiply something with itself so the square of 5 root y would be 5 root y into 5 root y. So 5 x 5 is 25 and under root y into under root y equals just y so the answer will be 25y.

How To: Simplify square roots easily

robichaudd teaches you how to simplify square roots. When you're dealing with variables, even powers and you want to find out the square root of it, you follow the process. Divide the power by the root, which is two, because it's a square root, that gives you what comes out. If we have square root of x squared, the result would be x. So the square root of x to the 6 is x cubed. You simply divide the power by two, since we are dealing with square root. Then square root of 36 times x square is ...

How To: Evaluate square roots

This is the video about how to evaluate square roots. The square root of a number is a number that you can square to get it, that is, a number that you can multiply by itself to get the number. So, 2 is a square root of 4, because 2 x 2 = 4, and 3 is a square root of 9, because 3 x 2 = 9. (-2) x 2 is also 4 and (-3) x 2 is also 9. Numbers that have square roots always have two, a positive one and a negative one, but the square root symbol means only the positive one, so we can have one answer...

How To: Factor perfect square trinomials in algebra

Need to know how to factor perfect square trinomials? Learn how with this free video algebra lesson. 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 easier than ever to follow in their footsteps (or just study for that next big test).

How To: Factor the difference of two squares

Need a little help figuring out how to factor the difference of two square? Learn how with this free tripartite video math lesson. 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 easier than ever to follow in their footsteps (or just study for that next big test).

How To: Train your dog to perform the "cop-cop" trick

In this Pets & Animals video tutorial you will learn how to train your dog to perform the "cop-cop" trick. In this trick the dog learns to put its feet on your feet. Step 1 – teach the dog to target a book or a mat with their feet by offering them some treat. You can do this either by appreciating or clicking when both the feet touch the book. The next step is getting the dog to target the book with their feet while they are between your legs. You have to continually reinforce the dog to ma...

How To: Recycle old gift wrapping to make an origami ornament

Shiho Masuda Teaches you to make 3-D origami star using recycled materials. The materials required are leftover wrapping paper, ribbons, two 3. 25" cardboard squares, ruler, scissors, glue, double sided tape and an X-acto knife. She cuts out 8 6"x6" squares from paper and glues them back to back to make four double sided squares. The four pieces are folded into 3"x 3" squares and stuck together with double sided tape. The 2 cardboard pieces are covered with paper and 12" ribbons are taped to ...

How To: Do a wet foot fit test to fit shoes

This video demonstrates how to do a wet foot test and how to choose running shoes with the results of a wet foot test. The wet foot test is simple. Get your foot wet and place it on a piece of heavy duty paper which will create a foot print. The foot print shows what type of arch you have. There are three types of arches: high, medium and low. High arches require a lot of cushion for running. Medium arches require a reasonable amount of cushion for running. Individuals with low arches or flat...

How To: Understand the properties of a square in Geometry

In this tutorial, we learn how to understand the properties of a square in Geometry. The four angles on the inside of a square have to be right angles. All but be 90 degrees and add up to 360. A square has four equal sides, which you can notate with lines on the sides. The diagonals of the square cross each other at right angles, so all four angles are also 360 degrees. Diagonals have to be equal in length to each other as well. Once you better understand this, you will be able to learn more ...

How To: Lace up and tie your shoes to relieve pressure on foot

In this video tutorial, viewers will learn how to lace up and tie your shoes to relieve pressure on the foot. There are two techniques shown in this video. The first technique helps to relieve pressure on the top of the foot. If the top of the foot is under pressure, it can cause your toes to go numb. The second technique is the runner's knot. This technique will tighten the top of the shoe and prevent your heel from slipping. This video will benefit those viewers who have foot problems with ...

How To: Add and subtract radicals

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...

How To: Factor the difference of squares

In this video the instructor shows how to factor the difference of squares using a formula. The formula to find the difference of squares can only be applied if you have two perfect squares. The formula is (a * a - b * b) = (a - b) * (a + b). That is the difference of squares of two numbers is the product of sum of two numbers and difference of two numbers. So when you need to find the difference of squares of two numbers substitute the values in the above formula to directly solve for the fa...

How To: Find the area of a circle using squares

In this video the instructor shows how to calculate the area of a circle using squares. She starts with the formula of the circumference which she says is circumference C = Pi * D, where D is the diameter of the circle. Now she says that you can turn the shape of circle into a square and compute the area of the square there by calculating the area of the original circle. She shows how to do this by cutting up the square into sectors and arranging them in the form of a rough square and calcula...

How To: Do the square or box and circle stitch for lanyards

This how-to video demonstrates everything you need to know for lanyard needs. Follow along and find out how to start and finish a lanyard using the square of box stitch (or the circle stitch) throughout. All you need is two lengths of plastic thread. Use your lanyard as a keychain, or to hang a whistle onto. Watch this video tutorial and learn how to make a lanyard using the square or box as well as the circle stitch.