There are approximately 7.5x10^18 grains of sand on earth. there are approximately 7x10 ^27 atoms in an average human body. are there more grains of sand on earth or atoms in an average human body ? how do you know?

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.

=

≈ 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.

option: d is correct

step-by-step explanation:

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2