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77julia77 [94]
3 years ago
6

Christel wants to know what the most popular color at her school is. She surveys students grades 1,2,3.

Mathematics
1 answer:
shutvik [7]3 years ago
7 0

Answer:

It will be biased.

Step-by-step explanation:

By surveying only grades 1, 2, and 3, she is not taking a representation of the entire school. It is possible that the popular color or the color the students like would change over time and the opinion of the younger kids could be different from that of the older kids. Therefore, the sample is biased unless she surveys students from all grades.

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The area of two similar octagons are 4 m2 and 25 m2. What is the scale factor of their side lengths
mylen [45]

Answer:

The scale factor of the sides of the Octagon is 2:5

Step-by-step explanation:

Both these octagons can be considered as the combination of 8 similar triangles joined edge to edge.

We know this property of similar triangles, that the ratio of area of similar triangles is proportion to the square of the ratio of sides of the similar triangle.

Side_{1} ^{2} : Side_{2} ^{2} =Area_{1} : Area _{2}

From the above property, we plug in the values

Side_{1} ^{2} : Side_{2} ^{2} =4: 25

Side_{1}  : Side_{2}  =2: 5

Therefore, the ratio of the sides of the Octagon are 2:5.

7 0
3 years ago
Mitch lives on the 20th floor of an apartment building. Every time he leaves, he rides a self-service elevator from the 20th flo
weeeeeb [17]

Answer:

He does that because he is short and his hand can't reach the 20th floor button

Step-by-step explanation:

Mitch does that simply because he is short.

When he is leaving, he doesn't need to reach the 20th floor button because the button is way taller than the reach of his hands whereas when he is returning he has to reach the 20th floor button but his hand can only reach the 15th floor button. Thus, he gets to the 15th floor and walks up the remaining 5 flights.

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3 years ago
Write an equation that describes the functions<br> Functions: 0,0 1,4 2,8 3,12<br> Y=?
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Answer:

y=4x

Step-by-step explanation:

Plug the numbers in:

4*0=0--> (0,0)

4*1=4-->(1,4)

4*2=8-->(2,8)

4*3=12-->(3,12)

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Step-by-step explanation:

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3 years ago
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