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Veseljchak [2.6K]
3 years ago
12

Which of the following statements represents a difference between a sample survey and an observational study? A) Presence of pop

ulation. B)Inclusion of numerical data. C)People are aware that they are participating. D)Ability to collect information.
Mathematics
2 answers:
LekaFEV [45]3 years ago
8 0

Answer: C) People are aware that they are participating.

The sample survey is the technique which is initiates after taking proper consent from the participants by explaining the purpose of study and then data is collected which can be in the form of output of measurements, opinion about a cause or issue. But the observational study does not explain the purpose of the study to the participants, it just involves the data collection.

Therefore, on the basis of the above description, People are aware that they are participating. is the relevant option.

alexira [117]3 years ago
6 0

Answer:

c seems most likely from the given answers

Step-by-step explanation:


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3xy^3 + 5- x- 2xy^3= xy^3 +11<br><br> Solve please
snow_lady [41]

Answer:


Step-by-step explanation: 3XY 3+5-X-2XY3=XY3+11  USE THE COMMUTATIVE PROPERTY TO REODER THE TERMS...3Y3+5-X-2XY3=XY3+11 COLLECT LIKE TERMS Y3+5-X-Y3X+11..Cancel equal terms on both sides of the equation 5-x=11 move constant to the right side and change its sign  -x=11-5 subtract the numbers -x=6 final answer is X=-6


8 0
3 years ago
Read 2 more answers
A circular quilt is made from 113.04 square feet of fabric. How much trim is needed to go around it’s edge?
erik [133]

Hey there!

We are looking for the circumference of the circle, which is the distance around it. We are given the area, which is the radius squared times pi.

First, we need to undo the area to find our radius.

113.04/3.14=36

We square root this to find the radius.

√36=6

Our radius is six. To find the circumference, we need to multiply the diameter by pi. The diameter is twice the radius.

6*2=12

12*3.14=37.68

Therefore, we will need 37.68 feet of trim to around the edge of the quilt.

I hope this helps!

6 0
3 years ago
Please help me haha!
DanielleElmas [232]

Answer:

w=4

Step-by-step explanation:

2+6=8

8/2=4

w is 4 because half of 8 is 4.

Honestly this is my best guess idk.

5 0
3 years ago
Read 2 more answers
If △ABC ≅ △DEF, then what corresponding side is congruent to side BA? (Enter answer using segment letters only.)
sdas [7]
<h3>Answer is   ED</h3>

note: ED is the same as DE. The order of the segment letters does not matter.

============================================

Explanation:

In the sequence ABC, the letter B is the second letter and A is the first.

So the corresponding segment to BA will have its first slot be the second letter of DEF, and its second slot be the first letter of DEF. That's how I'm getting ED for the answer. It is the same as DE because it's the same segment.

The corresponding sides are congruent due to the CPCTC which stands for "corresponding parts of congruent triangles are congruent".

3 0
3 years ago
F(t)=t^2-3t<br> g(t)=2t+1<br> find f(g(t))
statuscvo [17]

Answer:

f (2t + 1) = 4t^{2} - 2t - 2

7 0
2 years ago
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