A skyscraper has a mass of 2.2 times 10,5 tons another skyscraper in the same town has a mass of 3.7 times 10,5 tons. What is the combined mass, in tons, of the two of the two skyscraper?

To find the combined mass of the two skyscrapers, you need to add their masses together.

Mass of first skyscraper = 2.2 × 10^5 tons
Mass of second skyscraper = 3.7 × 10^5 tons

Combined mass = Mass of first skyscraper + Mass of second skyscraper
= 2.2 × 10^5 tons + 3.7 × 10^5 tons

To add these two masses, we need to have the same exponent for the 10 parts of the scientific notation. Let's convert both masses to the same exponent (10^5) by adjusting their coefficients.

= (2.2 + 3.7) × 10^5 tons

Now, we can compute the sum.

= 6.9 × 10^5 tons

Therefore, the combined mass of the two skyscrapers is 6.9 × 10^5 tons.