Answer:
C) The sample does not accurately represent the population
> Last year the ratio of the number of middle school students
> to the number of high school students was 1:8.
1/9 x + 8/9 x = makeup of middle and high school students
> this year the ratio ... changed to 2:7
2/9 x + 7/9 x = x (again)
> there are 18 middle school students in the band this year
2/9 x = 18
2x = 9 * 18 → x = 81
Total = 81 in band ...
Last year:
1/9 and 8/9 = 9 and 72
This year
2/9 and 7/9 = 18 and 63
And from there you can figure out the changes:
+9 for middle school (which is increase from 1/9 to 2/9)
--9 for high school (which is decrease from 8/9 to 7/9)
Answer:
256
Step-by-step explanation:
16 ×16= 256
Hope it works out for you
Answer:
y=3(x+1)^2+7
Step-by-step explanation:
This is not the line of best fit because the line is not through the middle of the data points.
What is line of best fit?
The line of best fit is a line through a scatter plot of data points that best expresses the relationship between those points.
In this case, this is not the line of best fit because the line is not through the middle of the data points.
Learn more about best fit on:
brainly.com/question/23100748
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