## Direct Proportions – Grade 9 – Unit 10

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Do the following exercises using number line. Exercise 8.1 in page number 83 Exercise 8.2 in page number 84 Exercise 8.3 in page number 85

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https://youtu.be/z0wy5fs4Vm8 Write this note in your exercise book. Rounding Off When rounding off a number to the nearest multiple of ten, if the digit in the ones place of the number is less than 5 (1,2,3,4), then the closest multiple of ten which is less than that number is selected. is 5 or greater than

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In this article, we are going to talk about some important representative values and one of the main representative methods called Stem and Leaf Plot. Mode Let’s take the idea about the mode by using an example. Example:Marks obtained by 10 students for a mathematics test is given below. 78 93 45 67 82 54

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Who would say that they’re not a math person? Maybe they don’t have a math brain. Dispelling the Math Myths will help you to look at math in a new way. So let’s bust some math myths. A while ago, I was walking down the hallway at the Middle School, where I work as a

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Most of the times students struggle to understand the core of the mathematics concepts. This will lead them to understand math in higher education. The poor knowledge of the basics will discourage them in later studies. This doesn’t have to be that way. In this article, we are going to discuss how to improve your

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Venn diagrams are the most common way of representing a set. This method was introduced by the English mathematician John Venn. Therefore these are called Venn Diagram. Set is a collection of items that can be clearly identified.The items in a set are called its elements. Example: Let A be the set of even numbers

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Similarity,In what follows, we’ll see that many—if not most—of our results shall rely on the proportionality of sides in similar triangles. A convenient statement is as follows. Similarity, Given the similar triangles ΔABC ∼ ΔA’BC’,We have that, Conversely, if then triangles ΔABC ∼ ΔA’BC’ are similar. Proof Note first that ΔAA’C’ and ΔCA’C’ clearly have

Right-angled triangle and the Pythagorean theorem In this article lets try to develop the Pythagorean theorem by means of the right angle. So first let’s get some proper ideas about the right-angled triangle. What is a right-angled triangle? If an angle of a triangle is 90o it is called a right-angled triangle or right triangle.

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A Trigonometric identity or trig identity is an identity that contains the trigonometric functions sine(sin), cosine(cos), tangent(tan), cotangent(cot), secant(sec), or cosecant(csc). Trigonometric identities can use to: Simplify trigonometric expressions. Solve trigonometric equations. Prove that one trigonometric expression is equivalent to another so that we can replace the first expression by the second expression. The following

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