Answer:
-6
Step-by-step explanation:

5u > 64 - 14
5u > 50
u > 10
322 is 7/10 of all the students.
322 / 7 = 46
46 is 1/10 of all the students.
46 × 10 = 460
460 is 10/10 of all the students
There are 460 students in eighth grade.
The nearest hundredth would be 0.17
The answer is 21 :), the side without any number is also 8 because the line in it shows it’s congruent to the line on the opposite side so 8+8+5=21