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There are about 3×1011 stars in our galaxy and about 100 billion galaxies in the observable universe. Suppose every galaxy has as many stars as ours. How many stars are in the observable universe? Write in scientific notation.

Respuesta :

glitchykitty

Answer:

Im confused

Step-by-step explanation:

15?-

sorry-

;-;

adioabiola

The number of stars in the observable universe is; 3.033 × 10¹⁴

Since there are about 3 × 1011 stars in our galaxy; we can rewrite that to be;

  • 3033 stars or

  • 3033 stars or3.033 × 10³ stars in our galaxy.

However, there are about 100 billion galaxies in the observable universe.

We can rewrite that in scientific notation form so that we have;

  • 100 × 10⁹ or

  • 100 × 10⁹ or 10¹¹ galaxies in the observable universe.

Ultimately, since our galaxy is one of the 10¹¹ observable galaxies in the universe; the number of stars in the observable universe is;

  • 3.033 × 10³ × 10¹¹

By the laws of indices;

  • 3.033 × 10¹⁴.

Therefore, the number of stars in the observable universe is; 3.033 × 10¹⁴.

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