In an AP if an=4n-8 find the 15th term.

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1. Two balls yellow and green move al 5.5 meter per second and 4 meter per second respectively. Both the balls take same time 2 seconds to cover distance apb and distance ab respectively. Radius of the circle is 5cm. Find the area of finded region between paths ba and apb.
   

Simplify | 2/3 - 5/7 | - 2/3

The given graph (Fig 15.8) describes the distances of a car from a city P at

 different times when it is travelling from City P to City Q, which are 350 km

 apart. Study the graph and answer the following:

(i) What information is given on the two axes?

(ii) From where and when did the car begin its journey?

(iii) How far did the car go in the first hour?

(iv) How far did the car go during (i) the 2nd hour? (ii) the 3rd hour?

(v) Was the speed same during the first three hours? How do you know it?

(vi) Did the car stop for some duration at any place? Justify your answer.