Substitution method for Solving linear Systems The Substitution method for Solving linear Systems is easy to solve the equations. Substitution method can be applied in below steps. Step 1: First select one equation and solve it for one variable either x = or y =. Step 2: Substitute the solution from step 1 into the other equation. […]
Read More →Solving Quadratic Equations A Quadratic equation is an equation in the form “ax2 + bx + c = 0″, where x is variable, a, b, c, are real numbers, and a ≠ 0. Example- (1) x2 – 4x + 5 = 0 (2) x2 + 3x – 4 = 0 […]
Read More →Mean Value – Word problems In this lesson we will learn about mean. We will also learn how to find mean of given data and solve word problems on mean. How to calculate mean Example: (1)What is the mean of 1, 2, 5, and 4. Solution : Mean = Sum of observations/Number of observations the numbers […]
Read More →Mode – Definition – Examples In this tutorial, we shall learn about mode and how to find mode of a given observation. Definition: The mode of a data set is the value, occurring most frequently in set of observations. In other words, a data set having highest frequency of observations is its mode. How to find […]
Read More →Solutions of Trigonometric Ratios (1) If sin A = 4/5, find the other trigonometric ratios of the angle A. Solution: Let us draw a right △ ABC in which ∠B = 900 We know that, sin A = 4/5 = BC/AC Therefore, if BC =4k, then AC = 5k, where k is a positive number. Now, using […]
Read More →Word Problems – Set Example 1: In a group of 60 people, 27 like tea, 42 likes coffee, and each person likes at least one of the two drinks. How many people like both coffee and tea. Solution: Let T denote the set of people who likes tea and C denote the set of people who likes coffee. […]
Read More →Practice test linear equation. Solve the following equations. (a) x + 3 = 5 (b) x – 3 = 5 (c) y +8 = 20 (d) x + 2 = 2x + […]
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