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The sum of a number and its reciprocal i...

The sum of a number and its reciprocal is `2(1)/(30)`. Find the numbers.

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To solve the problem, we need to find a number \( A \) such that the sum of the number and its reciprocal equals \( \frac{2}{30} \). ### Step 1: Set up the equation We start with the equation based on the problem statement: \[ A + \frac{1}{A} = \frac{2}{30} \] ### Step 2: Simplify the right side We can simplify \( \frac{2}{30} \) to \( \frac{1}{15} \): \[ A + \frac{1}{A} = \frac{1}{15} \] ### Step 3: Multiply through by \( 15A \) To eliminate the fraction, we multiply both sides of the equation by \( 15A \): \[ 15A^2 + 15 = A \] ### Step 4: Rearrange the equation Rearranging gives us a standard form of a quadratic equation: \[ 15A^2 - A + 15 = 0 \] ### Step 5: Identify coefficients Here, we identify the coefficients: - \( a = 15 \) - \( b = -1 \) - \( c = 15 \) ### Step 6: Calculate the discriminant We calculate the discriminant \( D \) using the formula \( D = b^2 - 4ac \): \[ D = (-1)^2 - 4 \cdot 15 \cdot 15 = 1 - 900 = -899 \] ### Step 7: Analyze the discriminant Since the discriminant is negative (\( D < 0 \)), this means that there are no real solutions for \( A \). Thus, there are no real numbers that satisfy the original equation. ### Conclusion The conclusion is that there are no real numbers whose sum with their reciprocal equals \( \frac{2}{30} \). ---

To solve the problem, we need to find a number \( A \) such that the sum of the number and its reciprocal equals \( \frac{2}{30} \). ### Step 1: Set up the equation We start with the equation based on the problem statement: \[ A + \frac{1}{A} = \frac{2}{30} \] ...
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RS AGGARWAL-QUADRATIC EQUATIONS -Exercise 4E
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  2. The numerator of a fraction is 3 less than its denominator.If 11 is ad...

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  3. The sum of a number and its reciprocal is 2(1)/(30). Find the numbers.

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  4. A teacher on attempting to arrange the students for mass drill in the ...

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  5. 300 apples are distributed equally among a certain number of students....

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  6. In a class test, the sum of Kamal's marks in mathematics and English i...

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  8. If the price of book is reduced by Rs. 5, a person can buy 4 more book...

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  9. A person on tour has Rs. 10800 for his expencses. If he extends his to...

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  10. In a class test, the sum of the marks obtained by P in mathematics and...

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  11. A man buys a number of pens for Rs. 180. If he had bought 3 more pens ...

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  12. A dealer sells an article for Rs. 75 and gains as much per cent as the...

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  13. (i) One year ago, a man was 8 time as old as his son. Now, his age is ...

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  14. The sum of the reciprocals of Meena's ages (in years) 3 years ago and ...

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  15. The sum of ages of a boy and his brother is 25 years, and the product ...

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  16. The product of Tanvy's age (in years) 5 years ago and her age 8 years ...

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  17. Two years ago, a man's age was three times the square of his son's age...

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  18. A truck covers a distance of 150 km at a certain average speed and the...

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  19. While boarding an aeroplane, a passenger got hurt. The pilot showing p...

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  20. A train covers a distance of 480 km at a uniform speed. If the speed h...

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