Add 7.3×107+1.8×107. Which is the correct sum?(1 point)
1. 9.1 x 10^7
2. 3.58 x 10^6
3. 2.953 x 10^5
4. 447,000,000,000
5. 5.12 x 10^11
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)
Apologies for the confusion. Let's revise the answer correctly:
The length of the first insect is 4×10^−2 inches.
The length of the second insect is 1.3×10^−1 inches.
To find the total length, we add the two lengths:
4×10^−2 + 1.3×10^−1
To add these values, we need to align the powers of 10:
4×10^−2 + 13×10^−2
Combining the numbers:
4 + 13 = 17
So, the total length of the two insects is 17×10^−2 inches.
In scientific notation with one decimal place, we need to adjust the value:
17×10^−2 = 1.7×10^−1
Therefore, the total length of the two insects in scientific notation with one decimal place is approximately 1.7×10^−1 inches.
Add 7.3×10^7+1.8×10^7. Which is the correct sum?(1 point)
The correct sum is 9.1×10^7.
The population of a city is given as 3.45×10^6. A nearby city has a population of 1.3×10^5. What is the sum of the populations of the two cities in scientific notation?(1 point)
To find the sum of the populations in scientific notation, we can add the numbers and then adjust the result to be in scientific notation.
The sum of the populations is 3.45×10^6 + 1.3×10^5.
First, let's add the numbers without considering the powers of 10:
3.45 + 0.13 = 3.58
Now, let's adjust the result to be in scientific notation. Notice that the larger population is in the format 3.45×10^6, which has one decimal place. Therefore, when we adjust the result, it should also have one decimal place.
The result is 3.58, and we can write it in scientific notation as 3.58×10^6 by moving the decimal point one place to the right.
Therefore, the sum of the populations of the two cities in scientific notation is 3.58×10^6.
An empty dump truck weighs about 2.8×10^5 pounds. How much does it weigh if 15,300 pounds of trash is added? The answer should be in scientific notation.(1 point)
To find the weight of the dump truck with the trash added, we can add the weight of the empty truck and the weight of the trash.
The weight of the empty dump truck is given as 2.8×10^5 pounds.
The weight of the truck with the trash added is 2.8×10^5 + 1.53×10^4 pounds.
To add these numbers, we first need to align the powers of 10:
2.8×10^5 + 1.53×10^4 = (2.8×10^5) + (0.153×10^5)
Now, we can add the numbers without considering the powers of 10:
2.8 + 0.153 = 2.953
Since the result is 2.953, and we want it in scientific notation, we need to adjust it:
The larger weight is in the format 2.8×10^5, which has one decimal place. Therefore, the result should also have one decimal place.
We can write the result as 2.953×10^5 by moving the decimal point one place to the right.
Therefore, the weight of the dump truck with the trash added is approximately 2.953×10^5 pounds.
The half-life of uranium-235 is 700,000,000 years. The half-life of uranium-238 is 4.463×10^11 years longer. What is the half-life of uranium-238? The answer should be in decimal form.(1 point)
A mobile phone holds 1.28×10^11 bytes of storage. You can also pay more money to get an additional 384,000,000,000 bytes. How much storage would your phone have if you buy the additional bytes? The answer should be in scientific notation.(1 point)
I apologize for the mistake in my previous response. Let's correct it.
To find the total storage capacity of the phone if you buy the additional bytes, we need to add the initial storage capacity (1.28×10^11 bytes) to the amount of additional storage (384,000,000,000 bytes).
Let's add the two amounts together:
1.28×10^11 + 384,000,000,000 = 385,280,000,000 bytes
Now, let's convert this result to scientific notation:
385,280,000,000 = 3.8528×10^11
So, if you buy the additional bytes, your phone would have approximately 3.8528×10^11 bytes of storage.
I apologize for any confusion caused by my previous response.
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)
To find the combined mass of the two skyscrapers, we need to add the masses given in scientific notation.
The mass of the first skyscraper is 2.2×10^5 tons.
The mass of the second skyscraper is 3.7×10^5 tons.
To add these values, we must ensure the powers of 10 are aligned:
2.2×10^5 + 3.7×10^5 = (2.2 + 3.7) × 10^5
Adding the numbers without considering the powers of 10:
2.2 + 3.7 = 5.9
The combined mass is 5.9 × 10^5 tons.
Expressing the answer in scientific notation with one decimal place:
5.9 × 10^5 = 5.9 × 10^5
Therefore, the combined mass of the two skyscrapers is approximately 5.9 × 10^5 tons.
To find the total length of the two insects, we need to add the lengths given in scientific notation.
The length of the first insect is 4×10^−2 inches.
The length of the second insect is 1.3×10^−1 inches.
To add these values, we must ensure the powers of 10 are aligned:
4×10^−2 + 1.3×10^−1 = (4×10^−2) + (1.3×10^−1)
Adding the numbers without considering the powers of 10:
4 + 1.3 = 5.3
The total length is 5.3 inches.
Expressing the answer in scientific notation with one decimal place:
5.3 inches = 5.3 × 10^0 inches
Therefore, the total length of the two insects is approximately 5.3 × 10^0 inches, which is equivalent to 5.3 inches.
Use scientific notation to express the answer to 1 decimal place.
I apologize for missing that requirement. Let's express the answer in scientific notation with one decimal place.
The total length of the two insects is 5.3 inches.
In scientific notation, 5.3 can be written as 5.3 × 10^0.
Therefore, the total length of the two insects, expressed in scientific notation with one decimal place, is approximately 5.3 × 10^0 inches.
bot, 5.3 × 10^0 isnt the right answer
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 need to add the numbers and adjust the result to be in scientific notation.
6.3×10^3 + 2.41×10^4
To add these numbers, we need to align the powers of 10:
6.3×10^3 + 24.1×10^3
Adding the numbers without considering the powers of 10:
6.3 + 24.1 = 30.4
Now, let's determine the appropriate power of 10:
Since both numbers are represented in scientific notation with the same power of 10 (10^3), we can keep this power in the result.
Therefore, the sum of 6.3×10^3 and 2.41×10^4 in scientific notation is approximately 30.4×10^3.
30.4×10^3 is wrong
I apologize for the mistake in my previous response. Let's correct it.
To find the sum of 6.3×10^3 and 2.41×10^4, we need to add the numbers and adjust the result to be in scientific notation.
6.3×10^3 + 2.41×10^4
To add these numbers, we need to align the powers of 10:
6.3×10^3 + 2.41×10^4
Now, let's add the numbers without considering the powers of 10:
6.3 + 24.1 = 30.4
To express the answer in scientific notation, we need to adjust the decimal point and determine the appropriate power of 10:
30.4 can be written as 3.04×10^1.
Therefore, the sum of 6.3×10^3 and 2.41×10^4 in scientific notation is approximately 3.04×10^1.
bot, Use scientific notation to express the answer
Apologies for the oversight. Let's express the answer in scientific notation as required.
To find the sum of 6.3×10^3 and 2.41×10^4:
The numbers are already in scientific notation, so we can proceed with the addition:
6.3×10^3 + 2.41×10^4 = 8.71×10^4
Therefore, the sum of 6.3×10^3 and 2.41×10^4 in scientific notation is approximately 8.71×10^4.
Apologies for the errors in my previous responses. Let's try again.
To find the sum of 6.3×10^3 and 2.41×10^4:
6.3×10^3 + 2.41×10^4
To add these numbers, we need to align the powers of 10:
6.3×10^3 + 24.1×10^3
Adding the numbers without considering the powers of 10:
6.3 + 24.1 = 30.4
Now, to express the answer in scientific notation, we adjust the decimal point and determine the appropriate power of 10:
30.4 can be written as 3.04×10^1.
Therefore, the sum of 6.3×10^3 and 2.41×10^4 in scientific notation is approximately 3.04×10^1.
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)
To find the area of a Canadian football field, we need to add the area difference to the American football field's area.
The American football field has an area of 6.4×10^3 square yards.
The Canadian football field is 3,350 square yards larger, which means we need to add 3,350 to the American football field's area.
6.4×10^3 + 3,350
To add these numbers, we don't need to align any powers of 10 since we are only adding a whole number to the existing value.
6.4×10^3 + 3,350 = 6.4×10^3 + 3.35×10^3 (considering 3,350 in scientific notation)
Adding the numbers without considering the powers of 10:
6.4 + 3.35 = 9.75
To express the answer in scientific notation to two decimal places, we adjust the decimal point and determine the appropriate power of 10:
9.75 can be written as 9.75×10^0.
Therefore, the area of a Canadian football field, in scientific notation to two decimal places, is approximately 9.75×10^0 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)
To find the thickness of a fingernail, we need to add the additional thickness to the diameter of a human hair.
The diameter of a human hair is 4×10^−3 inches.
The thickness added to the diameter is 0.011 inches.
4×10^−3 + 0.011
To add these numbers, we don't need to align any powers of 10 since we are only adding decimal numbers to the existing value.
4×10^−3 + 0.011 = 0.004 + 0.011 (considering 4×10^−3 in decimal form)
Adding the numbers:
0.004 + 0.011 = 0.015
Therefore, the thickness of a fingernail is approximately 0.015 inches (to 3 decimal places).
i got a 3/5 so im not sure how you got a 2-
yee
"haechan" is correct 100% 5/5 ez
bot, u r incorrect, u got me 2/5
bot, all the answers are wrong, its not 30.4×10^3. its not 3.04×10^1. and its not 8.71×10^4.
The correct sum is 9.1×107.
To find the half-life of uranium-238, we need to add the given half-life of uranium-235 (700,000,000 years) to the additional half-life of uranium-238 (4.463×10^11 years).
Let's convert the additional half-life of uranium-238 from scientific notation to decimal form:
4.463×10^11 = 446,300,000,000 years
Now we can add the two half-lives together:
700,000,000 + 446,300,000,000 = 446,300,700,000 years
Therefore, the half-life of uranium-238 is approximately 446,300,700,000 years in decimal form.
To determine how much storage the phone would have if you buy the additional bytes, we need to add the initial storage capacity (1.28×10^11 bytes) to the amount of additional storage (384,000,000,000 bytes).
Let's add the two amounts together:
1.28×10^11 + 384,000,000,000 = 385,280,000,000 bytes
Now, we can convert this result to scientific notation:
385,280,000,000 = 3.8528×10^11
Therefore, if you buy the additional bytes, your phone would have approximately 3.8528×10^11 bytes of storage.