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.(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
Apologies for the confusion. Let's re-evaluate.
To find the sum of 6.3×10^3 and 2.41×10^4, we add them together:
6.3×10^3 + 2.41×10^4 = 6.3×10^3 + 24.1×10^3
Now, we can add the coefficients (6.3 + 24.1) and keep the same exponential term:
30.4×10^3 = 3.04×10^4
So, the correct answer is 3.04×10^4.
To find the combined mass of the two skyscrapers, we simply need to add their masses together.
2.2×10^5 tons + 3.7×10^5 tons = 5.9×10^5 tons
The combined mass of the two skyscrapers is 5.9×10^5 tons.
To find the total length of the two insects, we simply need to add their lengths together.
4×10^−2 inches + 1.3×10^−1 inches = 1.7×10^−1 inches
The total length of the two insects is 1.7×10^−1 inches.
To find the area of the Canadian football field, we add the additional area to the American football field:
6.4×10^3 + 3,350 = 9.750×10^3 square yards
Rounded to 2 decimal places, the area of the Canadian football field is 9.75×10^3 square yards.
To find the thickness of a fingernail, we need to add the additional thickness to the diameter of a human hair:
4×10^-3 + 0.011 = 0.015 inches
So, the thickness of a fingernail is 0.015 inches.
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.(1 point)
What is the sum of 6.3×10^3 and 2.41×10^4 ? Use scientific notation to express your answer.(1 point)
To find the sum of 6.3×10^3 and 2.41×10^4, we simply need to add them together.
6.3×10^3 + 2.41×10^4 = 8.71×10^4
So, the sum of 6.3×10^3 and 2.41×10^4 is 8.71×10^4.
so what exactly is the answer for this question?
The answer to the question "What is the sum of 6.3×10^3 and 2.41×10^4?" is 8.71×10^4.
It says its wrong
An American football field has an area of 6.4×10^3 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.(1 point)
×10^3 square yards
A human hair has a diameter of about 4×10−3 inches. A fingernail is about 0.011 inches thicker. How thick is a fingernail? Write your answer as a decimal to 3 places.(1 point)
inches
Sorry I ment, A human hair has a diameter of about 4×10^−3 inches. A fingernail is about 0.011 inches thicker. How thick is a fingernail? Write your answer as a decimal to 3 places.(1 point)
inches
Apologies for the confusion. To find the thickness of a fingernail, we need to add the additional thickness to the diameter of a human hair:
4×10^-3 + 0.011 = 0.015 inches
So, the thickness of a fingernail is 0.015 inches.
Add 7.3×10^7+1.8×10^7 . Which is the correct sum?(1 point)
To add 7.3×10^7 and 1.8×10^7, we combine the coefficients while keeping the same exponential term:
7.3×10^7 + 1.8×10^7 = 9.1×10^7
So, the correct sum is 9.1×10^7.