P(6,-1),Q(1,3) and R(a,8) are points and if PQ=QR,then the value of a is =​

Question

P(6,-1),Q(1,3) and R(a,8) are points and if PQ=QR,then the value of a is —​

in progress 0
Arya 2 weeks 2021-09-09T13:03:55+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-09-09T13:05:52+00:00

    Answer:

    PQ^2=(1-6)^2+(3+1)^2=25+16=41

    QR^2=(a-1)^2+(8-3)^2=(a-1)^2+25

    (a-1)^2+25=41

    (a-1)^2=41-25=16

    a-1=4, a=5

    a-1= -4, a=-3

    a= 5 and -3

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )