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Zigmanuir [339]
3 years ago
12

Let f(t) give the number of liters of fuel oil burned in t days, and w(r) the liters burned in r weeks. Find a formula for w by

scaling the input of f.
Mathematics
1 answer:
viktelen [127]3 years ago
3 0

Answer:

7 f(t)

Step-by-step explanation:

So, our f(t) is the number of liters burned in t days. If t is 1, f(t)=f(1) and so on for every t.

w(r) id the number of liters in r weeks. This is, in one week there are w(1) liters burned.

As in one week there are 7 days, we can replace the r, that is a week, by something that represents 7 days. As 1 day is represented by t, one week can be 7t (in other words r = 7t). So, we have that the liters burned in one week are:

w(r) = w[7f(t)]

So, we represented the liters in one week by it measure of days.

So, we can post that the number of liters burned in 7 days is the same as the number of liters burned 1 day multiplied by 7 times. So:

w (r) = w[7 f(t)] = 7 f(t)

Here we hace the w function represented in terms of t instead of r.

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Let's solve your equation step-by-step.

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Step-by-step explanation:

1. First, you must calculate the mean, as following:

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2. Now, you should substract the means obtained to every single number of the set and then square it. Add all of them:

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\sqrt{2.52}=23.88

5. To the nearest tenth, the result is: 23.9


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