Answer:
I think it is 47. iuuuududhrururkejrjri
Answer:
A is my awnser
Step-by-step explanation:
Hope this helps
Answer:
The combined average is 94%
Step-by-step explanation:
for first period, number of students =40
average =96%
for second period, no of students =20
average =90%
but
let =sum of students for the first period
=sum of students for the second period
for first period;
for second period,
therefore the combined average =
that is
so combined average is 94%
Use these facts to count the approximate area of the unshaded region:
1. (from the table);
2. ;
3. ;
4. (from the table);
5. ;
6. .
Then the approximate area of the unshaded region is .
Answer: correct choice is C.