1. The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement. (Take the cost of a notebook to be Rs x and that of a pen to be…
2. See Figure, and write the following: (i) The coordinates of B. (ii) The coordinates of C. (iii) The point identified by the coordinates (–3, –5). (iv) The point identified by the coordinates (2, – 4). (v) The abscissa of…
1. Write the answer of each of the following questions: (i) What is the name of horizontal and the vertical lines drawn to determine the position of any point in the Cartesian plane? (ii) What is the name of each…
2. (Street Plan) : A city has two main roads which cross each other at the centre of the city. These two roads are along the North-South direction and East-West direction. All the other streets of the city run parallel…
1. How will you describe the position of a table lamp on your study table to another person? Coordinate Geometry Exercise 3.1 Previous Next Class 9 Coordinate Geometry Exercise 3.1 1. How will you describe the position of a table…
16. What are the possible expressions for the dimensions of the cuboids whose volumes are given below? (i) Volume : (3x^2-12x) (ii) Volume : (12ky^2+8ky-20k) Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1. Use suitable identities…
15. Give possible expressions for the length and breadth of each of the following rectangles, in which their areas are given: (i) Area : (25a^2-35a+12) (ii) Area : (35y^2+13y-12) Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1.…
14. Without actually calculating the cubes, find the value of each of the following: (i) ((-12)^3+(7)^3+(5)^3) (ii) ((28)^3+(-15)^3+(-13)^3) Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1. Use suitable identities to find the following products: (i) (x +…
13. If (x+y+z=0), show that (x^3+y^3+z^3=3xyz). Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1. Use suitable identities to find the following products: (i) (x + 4) (x + 10) (ii) (x + 8) (x – 10) (iii)…
12. Verify that (x^3+y^3+z^3-3xyz=)({1over 2}(x+y+z))([(x-y)^2+(y-z)^2+(z-x)^2]) Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1. Use suitable identities to find the following products: (i) (x + 4) (x + 10) (ii) (x + 8) (x – 10) (iii) (3x…
