In a recent year 21.3%, of all registered doctors were female. If there were 57800 female registered doctors that year, what was the total number of registered doctors? Round your answer to the nearest whole number.
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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

but which class are u may know that first