Astone is an english measure of weight. there are 14 lb in 1 stone and 2.2 lb in 1 kg. a certain person weighs 9 stone.
(a) if you wanted to convert the person’s weight to kilograms, what conversion factor should you use? show your work.
(b) what is the person’s weight in kilograms?
me asap.

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option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,