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1. Set up equations and solve them to find the unknown numbers in the following cases: (f) Ibenhal thinks of a number. If she adds 19 to it divides the sum by 5, she will get 8. 1. Set up equations and solve them to find the unknown numbers in the following cases: (f) Ibenhal [...]

1. Set up equations and solve them to find the unknown numbers in the following cases: (e) Munna subtracts thrice the number of notebooks he has from 50, he finds the result to be 8. 1. Set up equations and solve them to find the unknown numbers in the following cases: (e) Munna subtracts thrice [...]

Two lenses shown in figure are illuminated by a beam of parallel light from the left. Lens B is then moved slowly toward lens A. The beam emerging from lens B is Two lenses shown in figure are illuminated by a beam of parallel light from the left. Lens B is then moved slowly toward [...]

1. Set up equations and solve them to find the unknown numbers in the following cases: (d) When I subtracted 11 from twice a number, the result was 15. 1. Set up equations and solve them to find the unknown numbers in the following cases: (d) When I subtracted 11 from twice a number the [...]

A concave spherical refractive surface with radius R separates a medium of refractive index 5/2 from air. As an object is approaching the surface from far away along the central A concave spherical refractive surface with radius R separates a medium of refractive index 5/2 from air. As an object is approaching the surface from [...]

1. Set up equations and solve them to find the unknown numbers in the following cases: (c) If I take three-fourth of a number and add 3 to it, I get 21. 1. Set up equations and solve them to find the unknown numbers in the following cases: (c) If I take three-fourth of a [...]

1. Set up equations and solve them to find the unknown numbers in the following cases: (b) One-fifth of a number minus 4 gives 3. 1. Set up equations and solve them to find the unknown numbers in the following cases: (b) One-fifth of a number minus 4 gives 3. October 8, 2020 Category: Chapter [...]

1. Set up equations and solve them to find the unknown numbers in the following cases: (a) Add 4 to eight times a number; you get 60. 1. Set up equations and solve them to find the unknown numbers in the following cases: (a) Add 4 to eight times a number; you get 60. October [...]

4 (b) Construct 3 equations starting with x = -2. 4 (b) Construct 3 equations starting with x = -2. October 8, 2020 Category: Chapter 4 - Simple Equations , Maths , NCERT Class 7 ,

4 (a) Construct 3 equations starting with x = 2. 4 (a) Construct 3 equations starting with x = 2. October 8, 2020 Category: Chapter 4 - Simple Equations , Maths , NCERT Class 7 ,