Answer:
233.33 mg
Step-by-step explanation:
9x = 2100
---> x = 2100/9
---> x = 233.33 mg
It is 28 because you have to take the median out then go to the first set of data and find the median of that.
By definition of the trig functions,


We have
, so
, and
, so
.
Just to check: we should have

by the Pythagorean theorem. Indeed,
