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3 years ago

5

In geometry, what are reciprocals?

2 answers:

TiliK225 [7]3 years ago

5 0

Reciprocals are simply fractions that are turned upside down. For example, what do you think is the reciprocal of 2/3? Right, it's 3/2. It can also be 1 1/2 because 3/2 is an improper fraction. :)

Amiraneli [1.4K]3 years ago

3 0

<span>The reciprocal is shown as 1/x, or x-1. When we multiply a number by its reciprocalwe get 1. Example: 3 times 1/3 equals 1. Also called the "Multiplicative Inverse" See: Multiplicative Inverse.</span>

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In-s [12.5K]

Answer:

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Step-by-step explanation:

Distance covered by the train in crossing the pole = 100 m.

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$\sf \: = 20 \: m/s$

$\sf \: = 20 \times \frac{18}{5} \: km/h$

$\sf = 72 \: km/h$

Hence, the speed of the train is 72 km/h

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