Home
Class 10
MATHS
If ui = (xi-25)/10, sumfiui = 20 and sum...

If `u_i = (x_i-25)/10, sumf_iu_i = 20` and `sumf_i = 100` then find the value of `bar x`.

Text Solution

Verified by Experts

The correct Answer is:
17
Promotional Banner

Topper's Solved these Questions

  • RIGHT CIRCULAR CYLINDER

    CALCUTTA BOOK HOUSE|Exercise Exercise - 2 (Long-answer type questions)|11 Videos

  • SIMILARITY

    CALCUTTA BOOK HOUSE|Exercise Exercise 5.2|27 Videos

Similar Questions

Explore conceptually related problems

If u_i = (x_i-25)/5,sumf_iu_i = 20 and sumf_i= 100 then find the value of barx .

If u_i = (x_i-25)/10 , sumf_iu_i = 30 and sumf_i = 50 , find barx .

If u_i = (x_i - 35)/(10), sumf_iu_i =30 and sumf_i = 60 , then determine the value of barx .

If u_i = (x_i - 25)/(10),sumf_iu_i =20, sumf_i = 100 , then barx =

In a frequency distribution, mean is 8.1, sum f_ix_i = 132+5k and sumf_i = 20 . Find the value of k.

Mean of a freqency distribution is 54, sumf_ix_i = 2200+5k and sumf_i = 40+k . Find the value of k.

If A = [[x,1],[1,0]] and A^2 =I then find the value of x.

If the mean of a frequency distribution is 8.1 sumf_ix_i= 133+5k and sumf_i = 30 , find the value of k.

The arithmitic mean of a frequency distraction is 8. If Sigma f_i x_i = 130 +5k and Sigma f_i = 20 , then find the value of k.

If sum_(i=1)^(2n) sin^-1x_i = npi then find the value of sum_(i = 1)^(2n) x_i

CALCUTTA BOOK HOUSE-SAMPLE QUESTIONS PAPERS-QUESTION
  1. If 0^@ lt theta lt 90^@ , then find the least value of (9 tan^2 theta ...

    Text Solution

    |

  2. Fing the value of tan 1^@ tan2^@ tha^@ ……………. Tan89^@.

    Text Solution

    |

  3. If ui = (xi-25)/10, sumfiui = 20 and sumfi = 100 then find the value o...

    Text Solution

    |

  4. At the rate of 10% compound interest per annum fird the principal of ...

    Text Solution

    |

  5. Puja, Uttam and Bireendra started a pertnership business with capital ...

    Text Solution

    |

  6. Solve : 1/x - 1/(x+b)= 1/a -1/(a+b)[ x ne 0, -b]

    Text Solution

    |

  7. If the cost of pens decreses by ₹ 6 per dozen then 3 more pens can be ...

    Text Solution

    |

  8. y is the sum of two variables, one of which vaaries directly with the ...

    Text Solution

    |

  9. An agricultural co-operative society of village Pachla has purchased a...

    Text Solution

    |

  10. If (a+b-c)/(a+ b) =(b+c-a)/(b+c) = (c+a-b)/(c+a) and a+b+cne 0, then p...

    Text Solution

    |

  11. If x = (4ab)/(a+b), then find the value of (x+2a)/(x-2a) +(x+2b)/(x-...

    Text Solution

    |

  12. State and prove Pythangoras theorem.

    Text Solution

    |

  13. Prove that the opposite angles of a cyclic quadrilateral are suplemena...

    Text Solution

    |

  14. In DeltaABC, /A = 90^@ If CD be a median, then prove that BC^2 = CD^2...

    Text Solution

    |

  15. Construct a circle of radius 2*8 cm. Take a point at a distance of 8 ...

    Text Solution

    |

  16. If the sum of two angles be 135^@ and the difference of them be pi/12...

    Text Solution

    |

  17. If x sin 60^@ cos^@ 30^@ = (tan^2 45^@ sec 60^@)/("cosec 60"^@) then ...

    Text Solution

    |

  18. If tan50^(@) = p/q, then find the value of cos40^@.

    Text Solution

    |

  19. A passenger of an aeroplane observes that Howrah station is at one sid...

    Text Solution

    |

  20. The lengths of shadow of a tower standing on the ground is found to be...

    Text Solution

    |