To conduct Sports Day activities, in your rectangular shaped sch

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127.

To conduct Sports Day activities, in your rectangular shaped school ground ABCD, lines have been drawn with chalk powder at a distance of 1m each. 100 flower pots have been placed at a distance of 1m from each other along AD, as shown in Fig. 7.12. Niharika runs 1 fourth th the distance AD on the 2nd line and posts a green flag. Preet runs <pre>uncaught exception: <b>mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56<br />#0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array)
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#6 {main}</pre>th the distance AD on the eighth line and posts a red flag. What is the distance between both the flags? If Rashmi has to post a blue flag exactly halfway between the line segment joining the two flags, where should she post her flag?


Fig. 7.12


Take A as origin, AB as x-axis and AD as y-axis. Then,
Co-ordinates of the green flag post be

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#6 {main}</pre>

and co-ordinates of the red flag post be


open parentheses 8 comma space 100 over 5 close parentheses equals left parenthesis 8 comma space 20 right parenthesis

Now, Distance between both the falgs

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#6 {main}</pre>

and Position of the blue flag post be

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#6 {main}</pre>

So, she should post her blue flag on the 5th line at a distance of 22.5 km from AB.

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