Answer:
√8
Step-by-step explanation:
√2x√2x√2 is 2x2x2 which is 8 then the square root √8.
Answer:
25%
Step-by-step explanation:
Total= 40 students
boys +girls= 40
30 +girls= 40
number of girls
= 40 -30
= 10
Percentage of girls

Alternatively,
percentage of girls
= 100% -(percentage of boys)

Answer: x=5, y=22 C.
Step-by-step explanation:
I just did the quiz
DE/2 = 30.5
CE=30.5
DC=30.5
3x + 5 = 30.5
3x = 30.5 - 5
3x = 25.5
25.5/3 =8.5
x=8.5
Answer: the first one is C
the second one is B