Question
Solve the inequation, write the solution set and represent it on the number line.
$\frac{-x}{3} \leq \frac{x}{2}-1 \frac{1}{3}<\frac{1}{6} ; x \in R$
$\frac{-x}{3} \leq \frac{x}{2}-1 \frac{1}{3}<\frac{1}{6} ; x \in R$
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On a map drawn to a scale of 1 : 2,50,000; a triangular plot of land has the following measurements : AB = 3 cm, BC = 4 cm and ∠ABC = 90°.
Calculate : the actual lengths of AB and BC in km.
| Class Interval | 11-20 | 21-30 | 31-40 | 41-50 | 51-60 | 61-70 |
| Frequency | 15 | 28 | 50 | 35 | 20 | 12 |