Answer:
8
I really hope this helped.
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undefined
Step-by-step explanation:
A line with a slope of zero is a horizontal line parallel to the x- axis
Thus, a line perpendicular to it is a vertical line parallel to the y- axis, with an undefined slope.
A.
B.
C.
=4
Step-by-step explanation
(20x5) divided by (20+5)
100 divided by 25=4