Answer:
140
Step-by-step explanation:
yes
Well since 19/50 can't be simplified you have to double 9/25 which is 18/50 so then add 18 + 19 = 37 So 18/50 + 19/50 = 37/50 so 37/50 of the students ride the bus or walk to school.
The first one is the answer to the first question.
the second one is the answer to the second question
36%=36/100=0,36
0,36•47677= 17 163,74
So there's around 17 164 species treatensd with extinction
