If there is a ratio of men to women of 5:4 and there is a total of 1800 people how many ne are there

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

i believe it's a.

i'm not sure on this one, most likely correct.