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Sati [7]
3 years ago
12

What is 2/3 x 1/2 as a decimal answer becuase I couldn't find out what the answer was.

Mathematics
1 answer:
dlinn [17]3 years ago
8 0
The answer to 2/3 x 1/2 is 2/6 or 1/3
To find the decimal form you just have to divide 1 by 3
You get 0.3333333333........ repeating
So just put a repeating bar over 3 in 0.3
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Scientists discover two planets orbiting a distant star. The average distance from the star to Planet A is 4 AU, and it takes 43
Kitty [74]

Answer:

Option C - 9 AU

Step-by-step explanation:

To find : What is the average distance from Planet B to the star?

Solution :

According to kepler's law,

The squares of the sidereal periods (of revolution) of the planets are directly proportional to the cubes of their mean distances from the Sun.

i.e. P^2\propto S^3

We have given,

The average distance from the star to Planet A is S_1=4 AU.

It takes 432 Earth days for Planet A to orbit the star i.e. P_1=432

It takes 1,460 days for Planet B to complete an orbit i.e.  P_2=1460

Substitute the values in (\frac{P_1}{P_2})^2=(\frac{S_1}{S_2})^3

(\frac{432}{1460})^2=(\frac{4}{S_2})^3

0.0875=(\frac{4}{S_2})^3

Taking root cube both side,

\sqrt[3]{0.0875}=\frac{4}{S_2}

0.444=\frac{4}{S_2}

S_2=\frac{4}{0.444}

S_2=9.00

The average distance from Planet B to the star is 9 AU.

Therefore, Option C is correct.

5 0
3 years ago
I'm so clueless please help!
AysviL [449]

Answer:

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Step-by-step explanation:

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Part A)
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Step-by-step explanation:

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Step-by-step explanation:

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