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mrs_skeptik [129]
2 years ago
7

A steam engine for pulling trains has wheels of diameter 1.5 metres.

Mathematics
1 answer:
Dima020 [189]2 years ago
3 0

Answer:

The wheel completed a total of 212 turns.

Step-by-step explanation:

A wheel has a circular form, therefore its length is given by the following formula:

length = 2*\pi*radius

Where radius is half the diameter. Applying the data from the problem to calculate the length of the wheel gives us:

length = 2*\pi*(\frac{1.5}{2})\\length = 1.5*\pi = 4.7124

Since the engine traveled a distance of 1000 metres and each turn of the wheel has 4.7124 metres, in order to calculate the number of turns the wheel made in that course we need to divide both numbers as shown below:

turns = \frac{1000}{4.7124} = 212.21

The wheel completed a total of 212 turns.

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What value should be added to the expression to create a perfect square? x^2 - 20x
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4 0
3 years ago
Please help me answer this question
fredd [130]

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1. 0 seconds and 16 feet.

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2. 1 second and 18 feet.

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3. 2 seconds and 20 feet.

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Therefore, the answer is 2t + 16.

4 0
2 years ago
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