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Ilya [14]
3 years ago
5

A teacher wants to know whether the students in the entire school prefer watching television or playing outdoor games after scho

ol. The teacher draws a random sample from the following groups:
All school teachers
All students on the football team
All boys in each grade
All students in each grade

Which of the following groups best represents the population from which the teacher should take a random sample to get the best results for her survey?

All school teachers
All students on the football team
All boys in each grade
All students in each grade
Mathematics
2 answers:
Fynjy0 [20]3 years ago
8 0
1) All students in each grade                      2)All students in each grade
Burka [1]3 years ago
4 0

Answer:

All students in each grade.

Step-by-step explanation:

The teacher does not want now about specific types if students like boys or students on the football team. The teacher also does not want to know about school teachers, she wants to know about students at random so she can get a more accurate sample.

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svetoff [14.1K]
Factor out the cos<span>θ:
</span>cosθ (2sin<span>θ + sqrt3) = 0
</span>Therefore, the only ways this can happen are if either cosθ = 0 or if (2sin<span>θ + sqrt3) = 0
</span>The first case, cosθ = 0 only at θ <span>= pi/2, 3pi/2.
</span>The second case, <span>(2sin<span>θ + sqrt3) = 0 simplifies to:
</span></span>sin<span>θ = (-sqrt3)/2
</span><span><span>θ = 4pi/3, 5pi/3
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7 0
3 years ago
What will the length of segment I' J' be?<br>​
Ymorist [56]

Answer:

5.333

Step-by-step explanation:

To find the length of dilated I' J' we need to dilate the shape.

To do this you multiply each coordinate by 8/3.

Ex: (x,y) ---> (8/3x, 8/3y)

H: (0,3) ---> (8/3*0, 8/3*3)

I: (1,1) ---> (8/3*1, 8/3*1)

J: (3,1) ---> (8/3*3, 8/3*1)

K: (2,5) ---> (8/3*2, 8/3*5)

Now we plot this. (Picture attached)

The new I' coordinate: (2.667, 2.667)

The new J' coordinate: (8, 2.667)

The new length would be 8 - 2.667 so we can find the distance between the two points.

Note we are subtracting the y coordinates and not x because x coordinates represent height and y represents length

8 - 2.667 equals 5.333

So the length of segment I' J' will be 5.333

5 0
2 years ago
What is 2819 divided by 55
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Step-by-step explanation:

4 0
2 years ago
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Write the following expression using an exponent:<br><br> 5⋅5⋅5⋅5
Vesna [10]

Answer:

5^4

Step-by-step explanation:

i hope this helps :)

8 0
2 years ago
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Tyler is building a fish tank in the shape of a sphere that has a diameter of 14 inches. Based on Tyler's research, it is recomm
Charra [1.4K]

Answer:

Tyler should buy 2 goldfishes for his fish tank,

Step-by-step explanation:

First let's find the volume of the sphere, using the following equation:

Volume = (4/3) * \pi * radius^3

The radius is half the diameter, so the radius is 14/2 = 7 inches

Now, finding the volume, we have:

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3 0
3 years ago
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