Home
Class 8
MATHS
Find the value of x , if y = 2 x − 5 ...

Find the value of x , if y = 2 x − 5 and y = 7 .

Promotional Banner

Topper's Solved these Questions

  • DIRECT AND INVERSE PROPORTIONS

    NCERT EXEMPLAR|Exercise THINK AND DISCUSS|2 Videos

  • DIRECT AND INVERSE PROPORTIONS

    NCERT EXEMPLAR|Exercise THINK AND DISCUSS|2 Videos

  • DATA HANDLING

    NCERT EXEMPLAR|Exercise EXERCISE|73 Videos

  • EXPONENTS AND POWERS

    NCERT EXEMPLAR|Exercise EXERCISE|195 Videos

Similar Questions

Explore conceptually related problems

Find the value of x, if y=2x-3 and y=5

Find the value of x+y , if 5x-2y=4 and x+8y=26 .

(i) x+2y=-7 and 3x-2y=-1, then find the value of x. (ii) If x+y=8 and 4y-x=2, then find the value of y. (iii) If 3x+5y=9 and 5x+3y=7, then find the value of x+y. (iv) If 3x-y=11 and x-3y=17, then find the value of x-y.

In the equation 2x+y=7 , find the values of (i) y if x=2 and (ii) x if y=-1 .

Find the value of x and y- 2x+3y=0 3x+4y=5

Solve for x & y and find the value of 9x+3y : 2x+5y=13 7x-y=27

Find the value fo x:y, if (7x - 15y)/(4x + 6y) = (5)/(6).

Find the greatest value of x^(3)y^(4) if 2x+3y=7 and x>=0,y>=0 .

Find the values of x and y , if (3y -2) + (5 -4x)i=0 , where , x y in R.

NCERT EXEMPLAR-DIRECT AND INVERSE PROPORTIONS -EXERCISES
  1. The mass of an aluminium rod varies directly with its length. If a 16 ...

    Text Solution

    |

  2. if 3, x, 6, 18 are in proportion , then x =

    Text Solution

    |

  3. Find the value of x , if y = 2 x − 5 and y = 7 .

    Text Solution

    |

  4. If Naresh walks 250 steps to cover a distance of 200 metres, find the ...

    Text Solution

    |

  5. A car travels a distance of 225 km in 25 litres of petrol. How many li...

    Text Solution

    |

  6. From the following table, determine if x and y are in direct proportio...

    Text Solution

    |

  7. From the following table, determine if x and y are in direct proportio...

    Text Solution

    |

  8. From the following table, determine if x and y are in direct proportio...

    Text Solution

    |

  9. If a and b vary inversely to each other, then find the values of p, q,...

    Text Solution

    |

  10. If a and b vary inversely to each other, then find the values of x, y...

    Text Solution

    |

  11. If a and b vary inversely to each other, then find the values of l, m...

    Text Solution

    |

  12. If 25 metres of cloth costs Rs 350, then What will be the cost of 4...

    Text Solution

    |

  13. If 25 metres of cloth costs Rs 337.50, then What will be the length ...

    Text Solution

    |

  14. A swimming pool can be filled in 4 hours by 8 pumps of the same type. ...

    Text Solution

    |

  15. The cost of 27 kg of iron is Rs 1,080, what will be the cost of 120 kg...

    Text Solution

    |

  16. At a particular time, the length of the shadow of Qutub Minar whose he...

    Text Solution

    |

  17. In a hostel of 50 girls, there are food provisions for 40 days. If ...

    Text Solution

    |

  18. Campus and Welfare Committee of school is planning to develop a blue s...

    Text Solution

    |

  19. Work with a partner to write at least five ratio statements about this...

    Text Solution

    |

  20. A packet of sweets was distributed among 10 children and each of them ...

    Text Solution

    |