Question

The mass of Earth is approximately 5.9 x 1024 kg and the mass of Venus is approximately 4.9 x 1025 kg. What is their total combined mass expressed in scientific notation? Show your work. DID I GET THE ANSWER RIGHT? IF NOT EXPLAIN HOW TO FIND THE ANSWER!! AND THE WORK!!
WORK:
5.9 x 4.9 = 28.91

25-24= 1

ANSWER:
28.91 x 10^1

Answer 1

I'm not sure if that's the correct method of finding that (it could be, I was just never shown that kind of method). What I did was multiply everything out, that way you have two numbers vs two equations. Then add those two numbers and turn that into scientific notation.