A skyscraper has a mass of 2.2×105 tons. Another skyscraper in the same town has a mass of 3.7×105 tons. What is the combined mass, in tons, of the two skyscrapers? Use scientific notation to express your answer to 1 decimal place.(1 point)
1. 5.9 x 10^5
2. 1.7 x 10^(-1)
3. 3.04 x 10^4
4. 9.75
5. 0.015
To find the combined mass of the two skyscrapers, we add the masses of the two skyscrapers.
2.2×10^5 tons + 3.7×10^5 tons = 5.9×10^5 tons
Therefore, the combined mass of the two skyscrapers is 5.9×10^5 tons.
To find the total length of the two insects, we add the lengths of the two insects.
4×10^(-2) inches + 1.3×10^(-1) inches = 1.7×10^(-1) inches
Therefore, the total length of the two insects is 1.7×10^(-1) inches.
To find the area of the Canadian football field, we need to add 3,350 square yards to the area of the American football field.
6.4×10^3 square yards + 3,350 square yards = 9.75×10^3 square yards
Therefore, the area of the Canadian football field is 9.75×10^3 square yards.
To find the thickness of a fingernail, we can add the thickness of the human hair (4×10^(-3) inches) to the additional thickness (0.011 inches).
4×10^(-3) inches + 0.011 inches = 0.015 inches
Therefore, a fingernail is approximately 0.015 inches thick.
To find the combined mass of the two skyscrapers, we add the masses of the two skyscrapers.
2.2×105 tons + 3.7×105 tons = 5.9×105 tons
Therefore, the combined mass of the two skyscrapers is 5.9×105 tons.