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avanturin [10]
3 years ago
10

There are approximately 7.5x10^18 grains of sand on earth.There are approximately 7x10 ^27 atoms in an average human body.Are th

ere more grains of sand on earth or atoms in an average human body ?How do you know?
Mathematics
2 answers:
AlekseyPX3 years ago
6 0
There are more atoms in a human body because 7.5*10^18 is less than 7*10^27.
DENIUS [597]3 years ago
5 0

Answer:

Step-by-step explanation:

There are approximately 7.5 × 10¹⁸ grains of sand on earth.

There are approximately 7 × 10²⁷ atoms in an average human body.

A. There are more atoms in an average human body. When comparing the order of magnitude of each number 27 it greater than 18.

7 × 10²⁷ > 7.5 × 10¹⁸

B.  Now we will calculate how many times more atoms are in a human body compared to grains of sand on earth.

\frac{7\times 10^{27}}{7.5\times 10^{18}}

= \frac{7}{7.5}\times \frac{10^{27}}{10^{18}}

≈ 1 × 10²⁷⁻¹⁸

≈ 1 × 10⁹

≈ 10⁹

There are approximately 1,000,000,000 atoms more in a human body compared to the grains of sand on earth.

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