Home
Class 7
MATHS
Find the value of x, if 4:3 = x^(2):12, ...

Find the value of x, if `4:3 = x^(2):12, (x gt 0).`

A

16

B

4

C

9

D

3

Text Solution

Verified by Experts

The correct Answer is:
B
Given, `(4)/(3) = (x^(2))/(12)`
` rArr (48)/(3) = x^(2)`
`rArr x^(2) = 16`
`rArr x = 4 (x gt 0)`
Hence, the correct option is (b).
Promotional Banner

Topper's Solved these Questions

  • RATIO AND ITS APPLICATIONS

    PEARSON IIT JEE FOUNDATION|Exercise CONCEPT APPLICATION (LEVEL 2)|26 Videos

  • RATIO AND ITS APPLICATIONS

    PEARSON IIT JEE FOUNDATION|Exercise CONCEPT APPLICATION (LEVEL 3)|30 Videos

  • RATIO AND ITS APPLICATIONS

    PEARSON IIT JEE FOUNDATION|Exercise ESSAY TYPE QUESTIONS|18 Videos

  • NUMBER SYSTEM

    PEARSON IIT JEE FOUNDATION|Exercise ASSESSMENT TESTS|24 Videos

  • Set theory

    PEARSON IIT JEE FOUNDATION|Exercise ASSESSMENT TEST Test 2|12 Videos

Similar Questions

Explore conceptually related problems

Find the value of x if |[x,3],[1,2]|=0

Find the value of 'x' if : |{:(2x,3),(5,2):}|=|{:(16,3),(5,2):}| , x gt 0

If (13x^(2) + 30 x + 17)/(3x^(2) + 14 x + 8) gt 3 , then find the value of x, if x in R and x ne (-2)/(3), -4 .

Find the average value of f(x) = 4 - x^2 on [0,3]

Find the value of x satisfying the equation |x^(2)-x+4|-2-3|=x^(2)+x-12

Find the minimum values of f(x)=x^(2)+(1)/(x^(2)), x gt 0

If x=(1)/(2)(5-3i), then find the value of x^(4)-x^(3)-12x^(2)+23x+12

PEARSON IIT JEE FOUNDATION-RATIO AND ITS APPLICATIONS-CONCEPT APPLICATION (LEVEL 1)
  1. If A can type 60 letters in a minute and B can type 120 letters in a m...

    Text Solution

    |

  2. If X can do a piece of work in n days, then X's p days' work is.

    Text Solution

    |

  3. Find the value of x, if 80:60 = x:12.

    Text Solution

    |

  4. If x : y=2:3\ a n dy : z=2:3,\ then x : z= 2:3 (b) 3:4 (c) 5:7...

    Text Solution

    |

  5. The cost of 30 mangoes is Rs. 150. What is the cost of 60 mangoes (in ...

    Text Solution

    |

  6. 50% of 150 + 70% of 300 =

    Text Solution

    |

  7. 55% " of " 1000 divide 60% " of " 2000 =?

    Text Solution

    |

  8. If x% of 2000 = 600, then find the value of x.

    Text Solution

    |

  9. Which of the following fractions is equivalent to 16.bar(6)% ?

    Text Solution

    |

  10. Find the value of x, if 4:3 = x^(2):12, (x gt 0).

    Text Solution

    |

  11. If (2)/(5) of 50% of x = 10, find x.

    Text Solution

    |

  12. If x% of (12)/(5)" is " (18)/(25), then find x.

    Text Solution

    |

  13. Which of the following fractions is equivalent to 12.5%?

    Text Solution

    |

  14. If (4)/(7) of 49% of x = 21, then the value of x is .

    Text Solution

    |

  15. The following steps are involved in finding the total time taken by bo...

    Text Solution

    |

  16. The following steps are involved in solving the problem given below. A...

    Text Solution

    |

  17. The following steps are involved in finding the value of x.y, if (3x +...

    Text Solution

    |

  18. The following steps are involved in finding the simple interest on Rs....

    Text Solution

    |

  19. {:("Column A", "Column B"),("If SP" = Rs. 120 " and", (a) 2),(CP = R...

    Text Solution

    |

  20. {:("Column A", "Column B"),("Six men can do a piece of work in 6 days....

    Text Solution

    |