The only insight we can get when comparing means is the sample who has the most number of people per household among the two. Knowing that the average number of people per household among the sample of 8th grade students is higher than that of the 7th grade sample, Principal Coleman can infer that 8th graders have more people in their households than 7th graders. If this trend continues for Grade 9 onwards, he can also say that the number of people per household is increasing with respect to the students' grade level.
Answer:
2775
Step-by-step explanation:
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He needs 3 Tickets to Win a Prize.27×2 is... And that's ur Answer
<h3>
Answer: n = 9</h3>
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Explanation:
Let's assume that n is not negative. If we tried the smallest nonnegative value, n = 0, then we get
- 30+n = 30+0 = 30
- n/3 = 0/3 = 0
- sqrt(n+16) = sqrt(0+16) = 4
The middle result 0 isn't a natural number. The set of natural numbers is {1,2,3,4,...} which is the set of positive whole numbers.
So we can't use n = 0.
Through trial and error, you should find that n = 9 is the next value we can try such that sqrt(n+16) is a natural number, and so is n/3.
If n = 9, then,
- 30+n = 30+9 = 39
- n/3 = 9/3 = 3
- sqrt(n+16) = sqrt(9+16) = 5
We see that the middle result is now larger than 0 and it's a natural number. The same can be said for the last result as well.
