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Elodia [21]
3 years ago
14

What is the diameter of a circle whose circumference is 62.8 mm? Use 3.14 for π.

Mathematics
1 answer:
jarptica [38.1K]3 years ago
7 0
The answer is 20 question
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The tens digit of a certain number is five more than the units digit. The sum of the digits is 9. Find the number.
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<span>the tens digit = n
</span><span>the units digit = n-5

n + n-5 = 9
2n = 9+5
2n = 14
n = 7  </span>←  the tens digit

the units digit = n-5 = 7 - 5 = 2

<span>the number is 72</span>
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