miscellaneous-linear inequalities (ncert class 11th maths)

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Asked: July 7, 2020In: NCERT 11th Maths

14. IQ of a person is given by the formula $IQ = \frac{MA}{CA}\times 100$ where MA is mental age and CA is chronological age. If 80 ≤ IQ ≤ 140 for a group of 12 years old children, find the range of their mental age.

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Asked: July 7, 2020In: NCERT 11th Maths

13. How many litres of water will have to be added to 1125 litres of the 45% solution of acid so that the resulting mixture will contain more than 25% but less than 30% acid content?

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Asked: July 7, 2020In: NCERT 11th Maths

12. A solution of 8% boric acid is to be diluted by adding a 2% boric acid solution to it. The resulting mixture is to be more than 4% but less than 6% boric acid. If we have 640 litres of the 8% solution, how many litres of the 2% solution will have to be added?

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Asked: July 7, 2020In: NCERT 11th Maths

11. A solution is to be kept between 68° F and 77° F . What is the range in temperature in degree Celsius (C) if the Celsius / Fahrenheit (F) conversion formula is given by $F = \frac{9}{5}C + 32 ?$

eduhilfe

Asked: July 7, 2020In: NCERT 11th Maths

10. Solve the inequalities and represent the solution graphically on number line : $5(2x-7) -3 (2x+3) \le 0, 2x+19 \le 6x+47$

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Asked: July 7, 2020In: NCERT 11th Maths

9. Solve the inequalities and represent the solution graphically on number line : $3x -7 > 2 (x - 6) , 6 - x > 11 - 2x$

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Asked: July 7, 2020In: NCERT 11th Maths

8. Solve the inequalities and represent the solution graphically on number line : $2(x-1) < x+5, 3(x+2) > 2-x$

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Asked: July 7, 2020In: NCERT 11th Maths

7. Solve the inequalities and represent the solution graphically on number line : $5x+1 > -24, 5x-1 < 24$

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Asked: July 7, 2020In: NCERT 11th Maths

6. Solve the inequalities $7 \leq \frac{(3x+11)}{2} \leq 11$

eduhilfe

Asked: July 7, 2020In: NCERT 11th Maths

5. Solve the inequalities $-12 < 4 - \frac{3x}{-5} \leq 2$

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14. IQ of a person is given by the formula $IQ = \frac{MA}{CA}\times 100$ where MA is mental age and CA is chronological age. If 80 ≤ IQ ≤ 140 for a group of 12 years old children, find the range of their mental age.

13. How many litres of water will have to be added to 1125 litres of the 45% solution of acid so that the resulting mixture will contain more than 25% but less than 30% acid content?

12. A solution of 8% boric acid is to be diluted by adding a 2% boric acid solution to it. The resulting mixture is to be more than 4% but less than 6% boric acid. If we have 640 litres of the 8% solution, how many litres of the 2% solution will have to be added?

11. A solution is to be kept between 68° F and 77° F . What is the range in temperature in degree Celsius (C) if the Celsius / Fahrenheit (F) conversion formula is given by $F = \frac{9}{5}C + 32 ?$

10. Solve the inequalities and represent the solution graphically on number line : $5(2x-7) -3 (2x+3) \le 0, 2x+19 \le 6x+47$

9. Solve the inequalities and represent the solution graphically on number line : $3x -7 > 2 (x - 6) , 6 - x > 11 - 2x$

8. Solve the inequalities and represent the solution graphically on number line : $2(x-1) < x+5, 3(x+2) > 2-x$

7. Solve the inequalities and represent the solution graphically on number line : $5x+1 > -24, 5x-1 < 24$

6. Solve the inequalities $7 \leq \frac{(3x+11)}{2} \leq 11$

5. Solve the inequalities $-12 < 4 - \frac{3x}{-5} \leq 2$

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