The number represents an approximate measurement. State the range represented by the measurement. 18 ft
17.9 ft to 18.1 ft
17 ft to 19 ft
17.5 ft to 18.5 ft
17.75 ft to 18.25 ft

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step-by-step explanation:

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,