Question

plz give me step by step explanation​

Answer 1

Answer:

m = -12

Explanation:

as the vectors are parallel their cross product will be zero

therefore,

i          j           k

1         2         -3      

3        m        -9          

on doing cross product we get,

(-18-3m)i + (-9 +9)j + (m - 6)k = 0

-18-3m + m -6 = 0

-2m - 24 = 0

-2m = 24

m = -12

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