A skyscraper has a mass of 2.2×10^5 tons. Another skyscraper in the same town has a mass of 3.7×10^5 tons. What is the combined mass, in tons, of the two skyscrapers? Use scientific notation to express your answer to 1 decimal place
The combined mass of the two skyscrapers is:
(2.2×10^5 + 3.7×10^5) tons
= 5.9×10^5 tons
Therefore, the combined mass of the two skyscrapers is 5.9 x 10^5 tons.