Answer:
5 students
Step-by-step explanation:
9 students studied for more than 3 and 4 students studied less .
9-4=5
You can this is just the forms basically
The triangle was just flipped so the missing side is going to equal 36, so...
2y+20= 36
(Subtract 20 from each side to isolate the 2y)
2y= 16
(Divide each side by 2 to isolate the variable)
ANSWER:
y= 8