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pychu [463]
3 years ago
13

Excerpt from a school newspaper:

Mathematics
2 answers:
maria [59]3 years ago
6 0

Answer:

A


Step-by-step explanation:

  • During 2008-2009 session, 20% of students were in A-B Honor Roll.
  • During 2009-2010, 200 out of 1000 students were in A-B Honor Roll. What's that in percentage? We divide 200 by 1000 and then multiply by 100:

\frac{200}{1000}=0.2*100=20

So, that's also 20%. That's the same as 2008-2009 session, so the principal is wronged!


Option A is correct: "<em><u>A) There was no change in the number of students on honor roll from one year to the next."</u></em>

Anika [276]3 years ago
5 0
A) There was no change in the number of students on honor roll from one year to the next. This is noticeable because 200/1000 = .2 just as 20%/100% = .2 or 20/100 = .2. So there never was a change! 
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Oduvanchick [21]

i believe it's 22.5 out of 45 to get exactly .500

4 0
3 years ago
Find a polynomial that describes the area of the lawn which kevin has to mow in his front yard 6x+5,4x-9
Likurg_2 [28]

Answer:

Area=24x^2-34x-45

Step-by-step explanation:

Length and width of the yard are (6x+5) and (4x-9).

Area=length\times width\\\\Area=(6x+5)\times (4x-9)\\\\Area=24x^2+20x-54x-45\\\\Area=24x^2-34x-45

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Which statements describe a residual plot for a line of best fit that is a good model for a scatterplot? Check all that apply. T
lidiya [134]

Answer:

The points are randomly scattered with no clear pattern

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Step-by-step explanation:

The points in the residual plot of the line of best fit that is a good model for a scatterplot are randomly scattered with no clear pattern (like a line or a curve).

The number of points in the residual plot is always equal to those in the scatterplot.

It doesn't matter if there are about the same number of points above the x-axis as below it, in the residual plot.

The y-coordinates of the points are not the same as the points in the scatterplot.

8 0
3 years ago
Read 2 more answers
When 7 is subtracted from 3 times a certain number , the result is 28. What is the number
pychu [463]

7 multiply by three u get 21 then add it to the number 28 add u get the answer 49

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