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What is a factor rainbow in math?

A number's factors are the pairs of smaller numbers that can be multiplied to make the larger number. When factoring 28, the problem solver begins with one and 28 then moves up to two and 14 and four and seven.\n\nTo write this in a factor rainbow, a one is written on the left side and a 28 on the right with an arc drawn between them. A two is then written to the right of the one with 14 written to the left of 28. An arc in a different color should join these two digits. Finally, four and seven are written inside the other factors, joined by a different-colored arc. The finished product i..

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What is the Perpendicular Transversal Theorem?

The Perpendicular Transversal Theorem belongs to a whole class of theorems in Geometry. Its main focal point is the transversal, which is defined as any line that intersects two other lines at two separate and distinct points within the same plane. In this particular theorem, the situation is special in the sense that the two lines where the transversal passes through are parallel to each other.\nThis theorem may be used to support Euclid's parallel postulate, which involves finding proof of the parallel nature of two lines. It is also a special case of the Alternate Interior Angles Theor..

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How do you calculate the area of a rectangle?

Measure the rectangle dimensionsStretch the divider, and measure the length of the rectangle in question. Use several strokes if the length is bigger than the stretch of the divider. \n\nTransfer the divider to the ruler, and read the measurement. Make sure not to tamper with the stretch of the divider during the transfer to avoid an inaccurate measurement. The value you get is the length of the rectangle in question. Use the same procedure to get the value of the width.Record the measurementUsing a pen and a paper, record the measurements of the length and the width. You can verify the measur..

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How do I find out 100% of a number that is only 80% of the total?

One calculates percentage by dividing the number of items by the total and multiplying by 100. If the total is t, and the number items under consideration is n, then p=(n/t)x100. Using algebra to solve the formula for t, the number the question requires, gives the following expression: t=(n/p)x100. If 8 is equal to 80 percent of the total, inserting the numbers into the equation results in provides the t=(8/80)x100 so t=10. However, knowing to convert the percentage to a decimal and divide the given number by the percentage avoids algebraic manipulation and provides the same results: t=8/0.80 ..

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What is the definition of the angle addition postulate?

One can show this graphically by drawing the angle ?UVW, where point V denotes the vertex angle. The point S lies inside the angle. By drawing a line from point V through point S, one divides the angle ?UVW into two angles ?UVS and ?SVW. When added together, these two angles must be equal to the original angle ?UVW.\nIf the angle UVW is a 90 degree angle, then the two angles ?UVS and ?SVW are complementary angles. However, when these two angles add up to 180 degrees, they are supplementary angles.

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What is a histogram useful for?

Histograms show basic information about the data set, such as the median data value, the width of spread and the overall distribution of the quality being displayed. Histograms can be used to assess the current state of a system, compare this state with historical data and make inferences about how the system is likely to evolve.\nHistograms can be created directly from discrete data or from continuous data by first sorting this data into bins. Bins are regular intervals representing different ranges for the class of data being plotted. Dividing ages between 30 and 50 into sequential intervals..

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How do you divide whole numbers by decimals?

Set up the long division problemFirst, place the decimal on the outside of the long division symbol, and place the whole number on the inside. If your numbers are 52 divided by 3.25, than 3.25 is on the outside, and 52 is on the inside. Move the decimal place on the decimal numberMove the decimal place to the right in the decimal number, counting spaces as you go. For instance, 3.25 becomes 325 when you move the decimal point two places to the right. Move the decimal place on the whole numberMove the decimal place to the right on the whole number the same number of spaces. With a whole number,..

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How do you determine the circumference of a semicircle?

A semicircle can be seen as the shape that is formed when a circle is cut in half along its diameter. The arc that remains as a part of the semicircle is half as long as the circumference of the whole circle. The perimeter of the semicircle also includes the straight line that connects the two ends of that arc. That line is the same length as the diameter of the original circle.\n\nThe perimeter of the semicircle is the length of its arc plus the length of the line that closes the shape and can be calculated using these equations:\n\nP (semicircle) = 1/2 C (circle) + d (circle)\n\nC (circle) =..

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How do you find the circumcenter of a triangle?

Draw your triangle on grid paperIf you were given coordinates for your triangle, mark those on a grid and draw lines between the points. If you were given a combination of lines and/or angles, draw the triangle using a compass to find the intersections of known line lengths with unknown angles of intersection.Find the bisecting pointsTo bisect a line segment, find its halfway point. Divide the length of the line segment by two and measure that distance. Mark the point. Do this for all three sides.\nDraw perpendicular linesA perpendicular line forms a right angle. Use the 90-degree mark on your..

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What is the formula for finding cubic inches?

Formula tables for calculating volume can be found online at sites like Math.com and Basic-mathematics.com. In addition, there are calculators that will allow you to plug in the dimensions of the solid so you can find the volume, such as Calculator.net. It is important that you convert all of the dimensions of your solid to inches before using a formula or calculator to find the volume in cubic inches.

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