Answer:
A simple random technique used to choose let's say 100 students can be adopted
Step-by-step explanation:
Because it give each student equal opportunity of being selected to avoid bias
x=16
5times 4=20
3times 4=12
4times 4=16
y = - 50
m = slope
obtuse cant be a right angle
in order to be obtuse you have to be more than 90 dagrees
im stuck on that too man