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EleoNora [17]
3 years ago
10

HELP ASAP How many times will the digit '3' appear if we write all whole numbers from 1 to 99?

Mathematics
2 answers:
Liula [17]3 years ago
8 0

Answer:3,13,23,30,31,32,33,34,35,36,37,38,39,43,53,63,73,83,93

Step-by-step explanation:

You gotta count I did this quick

Alekssandra [29.7K]3 years ago
8 0
The digit ‘3’ will appear 20 times
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Regarding arc length, s:  s = r·Ф, where Ф is the central angle in radians and r is the radius.

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We know that C = circumference = 6, and that this leads to r = 6/π.

Substituting 6/π for r and 1/3 for s in Ф = s / r, we get:

Ф in radians = 1/3  /  (6/π), or  Ф = π/18 rad.    

                                                                           π         180°

Converting this into degrees, we multiply    ------ by ----------

                                                                           18        π rad

obtaining:  Ф = 10°

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