Final answer:
The combined mass of Earth and Venus is approximately 10.8 x 10²⁴ kg. It would take approximately 175,900 Earths and Venuses to equal the mass of the sun.
Step-by-step explanation:
To find the combined mass of Earth and Venus, we simply add their masses together. The mass of Earth is approximately 5.9 x 10²⁴ kg and the mass of Venus is approximately 4.9 x 10²⁴ kg. Adding these values gives us a combined mass of approximately 10.8 x 10²⁴ kg.
To determine how many Venuses and Earths it would take to equal the mass of the sun, we divide the mass of the sun by the combined mass of Earth and Venus. The mass of the sun is approximately 1.9 x 10³⁰ kg, and the combined mass of Earth and Venus is approximately 10.8 x 10²⁴ kg. Dividing these values gives us approximately 175.9 x 10⁴, which means it would take approximately 175,900 Earths and Venuses to equal the mass of the sun.