Which equation represents this problem? The time it takes Tomás to bike to the community center is 2 minutes less than half the
1 answer:
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We know some facts:
- There is a toll plaza every 12 1/2 miles along a 300 mile road.
- At each toll plaza drivers must pay $1.25.
First of all, we have to convert the mixed fraction into improper fraction:
Next, let's calculate the total number of toll plaza along the way:
As in every toll plaza, the driver must pay $1.25 then the total cost to drive the whole length of the road is:
About total cost: brainly.com/question/1436308
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Answer:
We have been given a unit circle which is cut at k different points to produce k different arcs. Now we can see firstly that the sum of lengths of all k arks is equal to the circumference:
Now consider the largest arc to have length \small l . And we represent all the other arcs to be some constant times this length.
we get :
where C(i) is a constant coefficient obviously between 0 and 1.
All that I want to say by using this step is that after we choose the largest length (or any length for that matter) the other fractions appear according to the above summation constraint. [This step may even be avoided depending on how much precaution you wanna take when deriving a relation.]
So since there is no bias, and \small l may come out to be any value from [0 , 2π] with equal probability, the expected value is then defined as just the average value of all the samples.
We already know the sum so it is easy to compute the average :