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21.07.2019 •
Mathematics
If tashi scores an 85, 87, and 89 on his first three tests, what must he score on his fourth test so that the average of the four test scores is exactly 90?
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Ответ:
Ответ:
Step-by-step explanation:
unction?
X
1
2.
3
4
у
3
6
12
24
y
2
5
9
14
2
3
4
х
1
2.
3
4
у
-3
-5
-7
1
2.
3
у
-2
-4
-2
0