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shaylawaldo11
18.07.2019 •
Mathematics
In a random sample of 30 sixth graders, 9 has traveled outside of the united states. there are a total of 120 sixth graders in the school. predict how many students have traveled outside of the united states.
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Ответ:
For this, we make the following rule of three:
30 > 100%
9 > x
We clear the value of x:
x = (9/30) * (100)
x = 30%
Then, for 120 sixth graders in the school we have:
(0.30) * (120) = 36
36 students have traveled outside of the united states
Ответ:
The answer is very simple is 3 .