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Didactalia: material educativo > 12-14 ans

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Sum of Polygon Angles

"The sum of the angles in any polygon is equal to the number of sides in the polygon minus two, all multiplied by 180 degrees. Sum of polygon angles problems may ask you to determine the sum of angles ...

Graphing Radical Equations using Shifts

"When graphing radical equations using shifts, adding or subtracting a constant that is not in the radical will shift the graph up (adding) or down (subtracting). Adding or subtracting a constant that ...

Sum of Digits

"One difficult type of Algebra problem are word problems asking about the sum of digits in a two digit number. Solving systems of equations by substitution is one of the most common ways to solve sum ...

Graphing Quadratic Equations

"When graphing quadratic equations, there are a few key terms that we can identify to help us graph quadratic functions more efficiently. Instead of plugging in values, we can find specific characteri ...

Graphing Lines Using Intercepts

"We use many different techniques to graph lines, but one of the most efficient and straightforward, when given the equation of the line, is graphing lines using intercepts. If we are not given a tabl ...

Statistical Range

"When given a list of numbers, we are often asked to find its statistical range. The statistical range of a list of numbers is the highest value minus the lowest value, and it describes how much the l ...

Graphing Lines

"When first introduced to graphing lines, we often use a table of values to plot points and connect them. There are several other methods of graphing lines, including using a point and the slope. Some ...

Statistical Probability

"It can be convenient to calculate the likeliness of an event occurring, and in many cases we can use statistical probability. We often encounter this in problems involving card games or dice rolling. ...

Statistical Mode

"When given a list of numbers, we are often asked to find the statistical mode. The statistical mode is the most commonly occurring number in a list, and if more than one number occurs with the same f ...

Graphing Inequalities with Two Variables

"Just like equations, sometimes we have two variables in an inequality. Graphing inequalities with two variables involves shading a region above or below the line to indicate all the possible solution ...

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