The average speed of the student for his entire walk is equal to 1.5 m/s. Therefore, option (b) is correct.
What is the average speed?
The average speed of a body is calculated as the total distance traveled in a fixed interval of time. The average speed can be determined by dividing the total distance traveled by a body by the total time.
The average velocity is a single value if the object moves uniformly. Speed is a scalar quantity, it has no specified direction. The average speed has the S.I. unit the same as velocity i.e. m/s.
Given the distance covered by a student in first 80 sec = 100m
After stooping for 30sec again cover a distance of 200m in 90sec.
The total distance traveled by the student = 100 + 200 = 300m
The time taken by student to cover distance = 80 + 30 +90 = 200 sec
The average speed of the student = total distance/ total time taken
= 300/200 = 1.5 m/s
Therefore, the average speed of the student is equal to 1.5m/s.
Learn more about average speed, here:
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Answer:
0 property
Step-by-step explanation:
I think so
The table represents an exponential function:
![f(x) = 3^x](https://tex.z-dn.net/?f=f%28x%29%20%3D%203%5Ex)
Then the correct option is B.
<h3>
What type of function is represented by the table?</h3>
Here we have the table:
x y
1 3
2 9
3 27
4 81
5 243
You can see that each time that x increases by one unit, the value of is multiplied by 3. This is clearly an exponential function.
The function actually is:
![f(x) = 3^x](https://tex.z-dn.net/?f=f%28x%29%20%3D%203%5Ex)
Evaluating it we get:
![f(1) = 3^1 = 3\\\\f(2) = 3^2 = 9\\\\f(3) = 3^3 = 27\\...](https://tex.z-dn.net/?f=f%281%29%20%3D%203%5E1%20%3D%203%5C%5C%5C%5Cf%282%29%20%3D%203%5E2%20%3D%209%5C%5C%5C%5Cf%283%29%20%3D%203%5E3%20%3D%2027%5C%5C...)
So the correct option is B, exponential.
If you want to learn more about exponential functions:
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Answer:
84%
Step-by-step explanation:
I'm not sure how I got that answer but I'm just smart like that. I'm sorry I couldn't give a better explanation. I'm in a bit of a rush but I hope this answer is helpful to you. Percentage was the only way I could think of. Sorry again.