Question

5 plzz thx an plzzzzzzzzzz​

Answer 1

A(-8,6) B(a,4) O(0,0)

M mij lui OA => M((0-8)/2 , (6+0)/2)=>M(-4,3)

$ma = \sqrt{{( - 8 - ( - 4)) }^{2} +{ (6 - 3) }^{2} }$

=> MA=5

$ob = \sqrt{ {(a - 0)}^{2} + {(4 - 0)}^{2} }$

=>

$ob = \sqrt{ {a}^{2} + 16}$

MA=OB

=> 25=a²+16

=> a²=9

=>a=±3

a1=-3 a2=3