Answer:
there are 80 students
Step-by-step explanation:
you divide 9 by 90 to find how many teachers there are, then subtract it by 90
n=7
I feel like you need the answer now so i'm not gonna write one.
700
135°
π : 180
3π/4 : 180 × 3/4 = 135
1/0.4=10/4=5/2...............
