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MArishka [77]
3 years ago
6

If a=i-2j and b= 2i - xj are parallel, then x is.....a) 4 3 2 ) 2 d 4.​

Mathematics
1 answer:
cupoosta [38]3 years ago
7 0

Answer:

x = 4

Step-by-step explanation:

a = i-2j

b = 2i-xj

1 = k•2

-2 = k•(-x)

=> 1/2 = k

=> (-2)/(-x) = k

=> 1/2 = (-2)/(-x) => 1/2 = 2/x => x = 4

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Answer:

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Step-by-step explanation:

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