Answer:
The answer is 0.9789 approximately equal to 0.9790
Step-by-step explanation:
See the attached files for the details, hope it is clearly understood.
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Each line indicates the amount of a certain object.
We already know that the value of the green line is 15, all that is left to do is find the rest . . .
<u>Values</u>
Red Line: 20
Orange Line: 60
Green Line: 15
turquoise Line: 45
Blue Line: 65
Your welcome :3
We conclude that the sum of the first 8 terms of the arithmetic sequence is 17/5.
<h3>
How to get the sum of the first 8 terms?</h3>
In an arithmetic sequence, the difference between any two consecutive terms is a constant.
Here we know that:
There are 7 times the common difference between these two values, so if d is the common difference:
Then the sum of the first 8 terms is given by:
So we conclude that the sum of the first 8 terms of the arithmetic sequence is 17/5.
If you want to learn more about arithmetic sequences:
brainly.com/question/6561461
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Answer:
c) three
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Step-by-step:
The tetrahedron is a triangular pyramid with equilateral triangles on each face.
Based on the information given, it can be noted that the problem with the research is the problem of validity.
<h3>
Problems with validity.</h3>
It should be noted that in a research, a problem with validity takes place when there's a lack of reliability of the independent variable.
Also, it is a result of lack of representativeness of the independent variable and a lack of impact of the independent variable.
In this case, the researcher sets out to measure drug use on US college campuses by asking a representative sample of undergraduates whether they are currently receiving federal grants or loans. It should be noted that the question asked doesn't relate to the research.
In conclusion, there's a problem with validity.
Learn more about researches on:
brainly.com/question/25257437
