hibbo579
25.11.2019 •
Mathematics
Solve 2c – 9f = 45 for f. show your work. (6 points
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Ответ:
-2c both sides
-9f=-2c+45
÷-9 both sides
f=2/9c-5
Ответ:
y+30
Step-by-step explanation:
the sum of the numbers is 15y
the new sum after increase each number by 30 is 15y+450
the new mean 15y+450/15
= y+30