Answer:
i think it would be 20%
Step-by-step explanation:
Answer:
26
Step-by-step explanation:
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:
brainly.com/question/12322912
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(7w^2-7w-8)-(5w^2+2w-3)= 7w^2-7w-8-5w^2-2w+3=7w^2-5w^2-7w-2w-8+3=2w^2-9w-5
Answer:
120
Step-by-step explanation:
10% of 1.2 = .12
.12 = 120
