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dlinn [17]
2 years ago
14

The bus drives 66 km at an average speed of 24 km/h. How long does the journey take?

Mathematics
1 answer:
rewona [7]2 years ago
5 0

Answer:

2.75 hours

Step-by-step explanation:

Speed is 24km per hour (\frac{24km}{1hour}), and the bus covered 66km.

We need to get a value of <em>km</em> with the rate (24/1) and distance (66) given.

We get:  \frac{1hour}{24km} *66km.  

The km cancel out, leaving us with 66/24 hours, or 2.75 hours.

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now, it just so happen that the hypotenuse on that triangle, is actually 17, but we used the pythagorean theorem to find it, and the pythagorean theorem only works for right-triangles.

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when an outside line touches the radius line, and they form a right-angle, the outside line is indeed a tangent line, since the point of tangency is always a right-angle with the radius.



now, let's check for second circle

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