Question

please help me with the solution of question no.21

Answer 1

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Answer 2

Answer:

Step-by-step explanation:

A(3, 4); B(7, 2) ;C(-2, -5)

Let D be the point

Co-ordinates of D=(7-2/2, 2-5/2)

=(5/2, -3/2)

Length of AD=√(5/2-3) 2+(-3/2-4) 2

=√(5-6/2) 2+(-3-8/2) 2

=√(-1/2) 2+(-11/2) 2

=√1/4+121/4

=√122/4

=√61/2