What mistake did Raul make? He subtracted the values instead of adding
them.
He did not add the corresponding parts of the
complex numbers.
He found the sum instead of the average
because he forgot to divide by two.
He added the numbers in the wrong order.

13

step-by-step explanation:

distance formula is d=√(x2-x1)^2   +   (y2-y1)^2

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blogan.20174

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.