There is a straight angle witch mean that both b angles plus 88 equals 180 because a straight angel equals 180. So the solution would be D.
In order to simplify a fraction, we have to find a common factor in both numerator and denominator. So, let's start by factor the expressions completely: at the numerator we have
At the denominator we have
So, the fraction can be written as
You can see that there is a factor in common, that can be simplified:
Oh ok so square root of 2 is irrational since it goes on and on. square root of 18 is an irrational number too
Therefore, the length of the median from B is 5/2 cm.