The population of a city is given as 3.45×106 . A nearby city has a population of 1.3×105 . What is the sum of the populations of the two cities in scientific notation?
4.75×10^11
3.58×10^6
4.75×10^5
35.8+10^5
To find the sum of the populations in scientific notation, we need to add the two numbers together.
3.45×10^6 + 1.3×10^5 = 3.45×10^6 + 0.13×10^6 = 3.58×10^6
Therefore, the sum of the populations of the two cities in scientific notation is 3.58×10^6.
To find the sum of the populations of the two cities in scientific notation, we need to add their values. The population of the first city is 3.45×10^6, and the population of the second city is 1.3×10^5.
To add these numbers, we need to align the exponents. In this case, we can write the population of the first city as 3.45×10^6 and the population of the second city as 0.13×10^6.
Now we can add the values:
3.45×10^6 + 0.13×10^6 = 3.58×10^6
Therefore, the sum of the populations of the two cities is 3.58×10^6.
To find the sum of the populations of the two cities in scientific notation, you need to add the numbers without changing their powers of 10. Here's how you can do it:
Step 1: Convert both populations to the same power of 10. In this case, the population of the first city, 3.45×10^6, is already in scientific notation with a power of 10 equal to 6. However, the population of the second city, 1.3×10^5, needs to be converted to the same power of 10 as the first city, which is 6.
To convert the population of the second city to a power of 10 equal to 6, you need to move the decimal point two places to the right. This means that 1.3×10^5 becomes 0.013×10^6.
Step 2: Now that both populations are in scientific notation with the same power of 10 (6), you can add them together. The sum of 3.45×10^6 and 0.013×10^6 is 3.45 + 0.013, which equals 3.463.
Step 3: Convert the sum back to scientific notation. Since the decimal point is between the 3 and the 4, you need to move it one place to the left. This gives you 3.463×10^6.
Therefore, the sum of the populations of the two cities in scientific notation is 3.463×10^6.