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How do you find the perimeter of a triangle?

Gather suppliesGather a ruler, a piece of paper and a writing utensil. A calculator may be useful to complete the equation.Measure the sides of the triangleMeasure the sides of the triangle using the ruler. Write down the length of each of the sides of the triangle on a piece of paper. The first side of the triangle is considered the A side, the second side of the triangle is considered the B side and the third or longest side of the triangle is known as the C side of the triangle.Calculate the perimeterWrite down the original equation of p=a+b+c on a piece of paper. Replace A with the measure..

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What is 20 percent of 80?

Figuring percentages is a part of many everyday activities including determining sales tax, interest, tips and even test scores. For example, if a person wants to leave a 20 percent tip on a restaurant bill of $80, he would leave $16. The lowest term fraction for 20/100 is 1/5, so 20 percent can also be calculated as 1/5 x 80, or 16. The symbol for percent is %.

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Is matrix multiplication commutative or associative?

The commutative law of multiplication does not apply to matrices. The commutative law states that the order of numbers can be changed without changing the answer. A matrix is an array of numbers. Matrix multiplication is done using the "dot product" method. After obtaining the products of matching members in each row and column, they are all summed up. Since matrix multiplication is not commutative, if the order of multiplication is changed, the answer is different.

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How do you find the cosine of pi?

Find angle pi on a gridUse a sheet of graph paper that already has a vertical, or y, and a horizontal, or x, axis or draw them. To the right of the y-axis, x is positive, and above the x-axis, y is positive.\n\nMark the right side of the x axis as "0, 2pi" in radians, meaning that the ray starting at the origin and extending horizontally to the right is at angle 0. It is also 2pi, because in radians, 2pi is a complete circle. Angle pi is half of 2pi, meaning that it is halfway around the circle. Halfway around the circle is along the same horizontal line but in the opposite direction. Label th..

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How does one find the focus of a parabola?

Before determining the coordinates of the focus, the vertex of the parabola must be identified. From the given algebraic equation of a parabola, (x-h)^2 = 4p (y-k), the vertex is located in the coordinates (h,k). The equation given above applies to a vertical parabola, so the measurement of the distance from the vertex to the focus should also be vertical. Therefore, the set of coordinates for the focus is (h,k+p). In a similar fashion, the focus of a horizontal parabola with the equation (y-k)^2 = 4p (x-h) is located at (h+p,k).\nThe focus is central to the definition of a class of algebraic ..

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What is a polygon with four sides and four angles called?

Plane geometry recognizes five special kinds of quadrilaterals. Parallelograms consists of two pairs of parallel sides and have equal measurements for opposite sides and opposite angles. Squares are quadrilaterals in which all four sides and all four angles have equal measurements. Rectangles have four angles with equal measurements, and the opposite sides also have equal measurements. All squares are rectangles, but not all rectangles are squares. Trapezoids have exactly one pair of parallel sides. Rhombuses have four sides with equal measurements, and opposite pairs of sides are parallel. Al..

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What is a Mandelbrot set?

Fractals derived from Mandlebrot sets are formed in the same way as simple graphs generated from repeating geometric functions. However, instead of using real numbers that can be found on the number line, Mandlebrot sets use complex numbers. Also known as imaginary numbers, complex numbers are values that have been multiplied by a special unit that allows for the formation of negative square roots.

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How do you use a number pattern calculator?

The Fibonacci sequence number pattern calculator on Calculator.com is based on a pattern in which every number of a sequence is equal to the sum of the previous two numbers in the sequence. Users of the website enter a numerical value into the tool, and the corresponding Fibonacci sequence value is returned. Calculator.net's geometric sequence calculator works in a similar manner, but is based on a number pattern in which each number after the first is determined by multiplying the previous number by a nonzero constant. Users can calculate the value of a given position in a geometric sequ..

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What are the different sizes of free printable graph paper?

PrintFreeGraphPaper.com offers Cartesian graph paper in inches and millimeters, with several size options for both, including 1/5-inch, 10-millimeter and 1/4-inch sizes. This type of paper is used in algebra and a variety of non-mathematical applications.\nIn addition to standard graph paper in 1/2-inch, 3/8-inch, 1/4-inch, 1/10-inch and 1-centimeter sizes, Math-Aids.com has quadrant graph paper, vertical and horizontal number lines, and dot graphs in various sizes. Users can print the graph paper directly from their browsers.\nAt PrintablePaper.net, standard graph paper ranges from grids with..

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What are some math games for third graders?

In grade school, students learn fundamental mathematical concepts through various teaching methods. One effective technique of enhancing a student's mathematical aptitude is the use of educational games, which provide an engaging and fun way of learning new things or reinforcing skills that have been previously acquired.Popular online math games that cater to the grade 3 syllabus are available for free play at Math Playground. Some of these games include "Thinking Blocks," "Modeling Tool," "The Great Penguin Canoe Race" and "Kangaroo Hop."

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