Answer:
Vel. of the car = 3.33 meter per second.
Explanation:
In given graph, y axis represent the distance traveled by the car and x axis represent the time taken by car.
At time t = 30 seconds , distance traveled by the car is 100 meter
We know that,
Speed =
speed =
speed = 3.33 meter per second
That's the final answer.
I hope it wil help you.
Let be the 20 marks of the boys, and
be the 10 marks of the girls.
We know that the global mean was 70, meaning that
Multiplying both sides by 30 we deduce that the sum of the scores of the whole classroom is
By the same logic, we work with the marks of the boys alone: we know the average:
And we deduce the sum of the marks for the boys:
Which implies that the sum of the marks of the girls is
And finally, the mean for the girls alone is
Answer:
A = 3.14
Step-by-step explanation:
A = π
A = 3.14 x
(diameter = 2)
(remember, radius is half of the diameter)
(radius = 1)
A = 3.14