Answer:

Step-by-step explanation:
Total number of students
Students wearing brown shoes
Students wearing black shoes
Number of students wearing black or brown shoes
Number of students not wearing brown or black
Fraction of students not wearing brown or black
I’m pretty sure you just do 11-4 and get 7 and then do like 99 divided by 7?
Algebraic expression: 4n + 8 = 5
Answer:
1.375
Step-by-step explanation: