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Arada [10]
2 years ago
12

The length of a planet's orbit around a star is approximately 29,870,000 km.

Mathematics
1 answer:
Sliva [168]2 years ago
5 0

Answer:

745 k/hr

Step-by-step explanation:

mathematically, 1 day = 24 hours

1670 days = 1670 * 24 = 40,080 hours

The speed is thus;

(29,870,000)/40,080 = 745.259

= 745 km/h

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Answer with Step-by-step explanation:

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Combination : it is a selection of r element out of n elements .

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Using combination formula

\binom{n}{r}=\frac{n!}{r!(n-r)!}

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Hence, total number of outcomes=3

Total number of outcomes determined by permutation have more outcomes.

Because permutation is an arrangement of elements  therefore, it consider order of arrangement of element   but combination is a selection of elements it does no consider order of elements

Arrangements of two elements out of 3 elements

{1,2},{2,3},{2,1},{3,2},{1,3},{3,1}

By using combination if two elements taken at a time then combination

{1,2},{2,3},{1,3}

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