To find the combined mass of the two skyscrapers, we add their masses.
The first skyscraper has a mass of 2.2×10^5 tons.
The second skyscraper has a mass of 3.7×10^5 tons.
Adding these two masses, we have:
(2.2×10^5) + (3.7×10^5)
We can add the numbers without changing the exponents if the numbers have the same power of 10. Here, both numbers are already in scientific notation with a power of 10.
Adding the decimal part, 2.2 + 3.7 = 5.9
The combined mass of the two skyscrapers is:
5.9×10^5 tons
Therefore, the combined mass of the two skyscrapers is 5.9×10^5 tons.
A skyscraper has a mass of 2.2\times10^5 tons. Another skyscraper in the same town has a mass of 3.7\times10^5 tons. What is the combined mass, in tons, of the two skyscrapers? Use scientific notation to express your answer to 1 decimal place
9 answers
A certain insect is approximately 4×10^−2 inches long. A second insect is about 1.3×10^−1 inches long. What is the total length of the two insects in inches? Use scientific notation to express your answer to 1 decimal place.
To find the total length of the two insects, we add their lengths.
The first insect is approximately 4×10^−2 inches long.
The second insect is about 1.3×10^−1 inches long.
Adding these two lengths, we have:
(4×10^−2) + (1.3×10^−1)
We can add the numbers without changing the exponents if the numbers have the same power of 10. Here, both numbers are already in scientific notation with a power of 10.
Adding the decimal part, 4 + 1.3 = 5.3
The total length of the two insects is:
5.3×10^−2 inches
Therefore, the total length of the two insects is 5.3×10^−2 inches.
The first insect is approximately 4×10^−2 inches long.
The second insect is about 1.3×10^−1 inches long.
Adding these two lengths, we have:
(4×10^−2) + (1.3×10^−1)
We can add the numbers without changing the exponents if the numbers have the same power of 10. Here, both numbers are already in scientific notation with a power of 10.
Adding the decimal part, 4 + 1.3 = 5.3
The total length of the two insects is:
5.3×10^−2 inches
Therefore, the total length of the two insects is 5.3×10^−2 inches.
What is the sum of 6.3×10^3 and 2.41×10^4 ? Use scientific notation to express your answer.
To find the sum of 6.3×10^3 and 2.41×10^4, we add the numbers and keep the same power of 10.
Adding the decimal part, 6.3 + 2.41 = 8.71.
Therefore, the sum of 6.3×10^3 and 2.41×10^4, expressed in scientific notation, is:
8.71×10^4.
Adding the decimal part, 6.3 + 2.41 = 8.71.
Therefore, the sum of 6.3×10^3 and 2.41×10^4, expressed in scientific notation, is:
8.71×10^4.
An American football field has an area of 6.4\times10^3 square yards. A Canadian football field is 3,350 square yards larger. What is the area of a Canadian football field? Write your answer in scientific notation to 2 decimal places.
To find the area of the Canadian football field, we add 3,350 square yards to the area of the American football field, which is 6.4×10^3 square yards.
Adding the numbers, 6.4×10^3 + 3,350 = 9,750.
Expressing this in scientific notation, 9,750 = 9.75 × 10^3.
Therefore, the area of the Canadian football field is 9.75 × 10^3 square yards.
Adding the numbers, 6.4×10^3 + 3,350 = 9,750.
Expressing this in scientific notation, 9,750 = 9.75 × 10^3.
Therefore, the area of the Canadian football field is 9.75 × 10^3 square yards.
A human hair has a diameter of about 4\times10^{-3} inches. A fingernail is about 0.011 inches thicker. How thick is a fingernail? Write your answer as a decimal to 3 places.
To find the thickness of a fingernail, we add 0.011 inches to the diameter of a hair, which is 4×10^(-3) inches.
Adding the numbers, 4×10^(-3) + 0.011 = 0.015.
Therefore, the thickness of a fingernail is 0.015 inches.
Adding the numbers, 4×10^(-3) + 0.011 = 0.015.
Therefore, the thickness of a fingernail is 0.015 inches.
1 answer