Question

The mass of the earth is 5.97x10²⁴ kg and that of the moon is 0.073x10²⁴kg.
What is their total mass?​

Answer 1

Answer:

divide this equation by 1upon 3

because one third mass of earth is equal to moon

Answer 2

Answer:

Total mass of both the earth and the moon is 6.0435 x 10^24 kg.

Step-by-step explanation:

To add two numbers with different powers of ten we have to use the LARD rule: LEFT ADD RIGHT DEDUCT. When moving the decimal to the LEFT you ADD to the power of ten. When going to the RIGHT you DEDUCT from the power of ten.

Let us rewrite 7.35 * 10^22 to bring the same powers of ten.

Using the LARD rule we move the decimal two places LEFT and ADD two to the power: 0.0735 x 10^24.

Let us add them,

= 5.97 x 10^24 + .0735 x 10^24

= 6.0435 x 10^24 kg.