Rachel rides her bike east for 3.0 miles. she then turns around and rides west for 4.8 miles. what is her displacement?

"Displacement" is the distance and direction between the starting point and ending point, regardless of the route traveled between them.

(3.0 miles east) + (4.8 miles west)  =  1.8 miles west of the starting point. 

Ifound this on google “two vectors are equal if they have the same magnitude and direction. they are parallel if they have the same or opposite direction. we can combine vectors by adding them, the sum of two vectors is called the resultant.” i hope this you.

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