Answer:
I think 46
Step-by-step explanation:
can't really explain I just know
Answer:
1.8-9
2. most often
3.12-13
4.12-13
Step-by-step explanation:
i got it correct thats all i got to say

Thickness of the book is ~
Refer to the attachment for solution ~
Answer:
Percentage score will be 83.33 %
Step-by-step explanation:
We have given Antonette gets 70 % on 10 problem test
Let consider here here total problem = total marks
So marks get 10 10 problem test = 10×0.7 = 7
Marks get in 20 problem test = 20×0.8 = 16
And marks get in 30 problem test = 30×0.9 = 27
Now total marks get get by Antonette = 7 +16 + 27 = 50
And total marks = 60
So percentage score of Antonette
%