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RoseWind [281]
3 years ago
12

I need some help with the part circled in red, please. John is riding a bike along a straight path.

Mathematics
1 answer:
jonny [76]3 years ago
3 0

Answer:

100/3 meters per min

Step-by-step explanation:

Im kinda unsure about this one.

It took 3 minutes for John to travel 200m and Sam to travel 300m.

You have time and distance so you can use that to find velocity.

John: 200/3 m/min

Sam: 300/3 m/min

take the difference between the two to get your answer.

|200/3 - 300/3| =  100/3 m/min

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Please answer this question
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Answer:

The answer is

Step-by-step explanation:

Given: f(x) = 3 + 2x - x²

To compute f(3 + h) substitute x = 3 + h.

Similarly, to compute f(h) simply substitute x = h.

We are asked to compute $ \frac{f(3 + h) - f(h)}{h} $

f(3 + h) = 3 + 2(3 + h) - {(3 + h)²}

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           = 9 + 2h - 9 - 6h - h²

           = - 4h - h²

Now, f(h) = 3 + 2h - h²

f(3 + h) - f(h) = -4h - h² - 3 - 2h + h²

                    = -6h - 3

$ \therefore \frac{f(3 + h) - f(h)}{h} = \frac{-3(2h + 1)}{h} $ which is the required answer.

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Step-by-step explanation:

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