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The average newborn weighs 7.5 pounds. About 4.1×10^6 babies are born in the United States every year. What is the approximate...Question
The average newborn weighs 7.5 pounds. About 4.1 x 10^6 babies are born in the United States every year. What is the approximate total weight in pounds of all babies born in the U.S. in a year? Write the answer in scientific notation, express to the exact decimal place.
Answers
Answered by
GPT 3.5
To find the approximate total weight of all babies born in the U.S. in a year, we need to multiply the average weight of a newborn by the number of babies born in a year.
Average weight of a newborn = 7.5 pounds
Number of babies born in the U.S. in a year = 4.1 x 10^6
Total weight = Average weight of a newborn x Number of babies born in a year
Total weight = 7.5 pounds x 4.1 x 10^6 babies
To multiply two numbers in scientific notation, we can multiply the coefficients and add the exponents.
Total weight = 7.5 x 4.1 x 10^6 pounds
Multiplying the coefficients gives us 30.75.
Adding the exponents gives us 6+0 = 6.
Total weight = 30.75 x 10^6 pounds
Rewriting in scientific notation, with one decimal place:
Total weight = 3.1 x 10^7 pounds
Therefore, the approximate total weight of all babies born in the U.S. in a year is 3.1 x 10^7 pounds.
Average weight of a newborn = 7.5 pounds
Number of babies born in the U.S. in a year = 4.1 x 10^6
Total weight = Average weight of a newborn x Number of babies born in a year
Total weight = 7.5 pounds x 4.1 x 10^6 babies
To multiply two numbers in scientific notation, we can multiply the coefficients and add the exponents.
Total weight = 7.5 x 4.1 x 10^6 pounds
Multiplying the coefficients gives us 30.75.
Adding the exponents gives us 6+0 = 6.
Total weight = 30.75 x 10^6 pounds
Rewriting in scientific notation, with one decimal place:
Total weight = 3.1 x 10^7 pounds
Therefore, the approximate total weight of all babies born in the U.S. in a year is 3.1 x 10^7 pounds.
Answered by
GPT 3.5
I apologize for the confusion. You are correct, I made a mistake in my previous response. Let's calculate the total weight correctly.
Average weight of a newborn = 7.5 pounds
Number of babies born in the U.S. in a year = 4.1 x 10^6
Total weight = Average weight of a newborn x Number of babies born
Total weight = 7.5 pounds x (4.1 x 10^6)
To multiply two numbers written in scientific notation:
Mantissas: 7.5 x 4.1 = 30.75
Exponents: 10^6
So, the total weight in pounds of all babies born in the U.S. in a year is 30.75 x 10^6 pounds.
Therefore, the approximate total weight of all babies born in the U.S. in a year is 30.75 x 10^6 pounds.
Average weight of a newborn = 7.5 pounds
Number of babies born in the U.S. in a year = 4.1 x 10^6
Total weight = Average weight of a newborn x Number of babies born
Total weight = 7.5 pounds x (4.1 x 10^6)
To multiply two numbers written in scientific notation:
Mantissas: 7.5 x 4.1 = 30.75
Exponents: 10^6
So, the total weight in pounds of all babies born in the U.S. in a year is 30.75 x 10^6 pounds.
Therefore, the approximate total weight of all babies born in the U.S. in a year is 30.75 x 10^6 pounds.
Answered by
GPT 3.5
I apologize for the mistake. Let's calculate the total weight correctly.
Average weight of a newborn = 7.5 pounds
Number of babies born in the U.S. in a year = 4.1 x 10^6
Total weight = Average weight of a newborn x Number of babies born
Total weight = 7.5 pounds x (4.1 x 10^6)
To multiply two numbers written in scientific notation:
Mantissas: 7.5 x 4.1 = 30.75
Exponents: 10^6
So, the total weight in pounds of all babies born in the U.S. in a year is 30.75 x 10^6 pounds.
However, to express the answer in scientific notation with the exact decimal place, we need to divide the mantissa by 10 and increase the exponent by 1:
Total weight = 30.75 x 10^6 pounds
Total weight = 3.075 x 10^1 x 10^6 pounds
Total weight = 3.075 x 10^(1+6) pounds
Total weight = 3.075 x 10^7 pounds
Therefore, the approximate total weight of all babies born in the U.S. in a year is 3.075 x 10^7 pounds.
Average weight of a newborn = 7.5 pounds
Number of babies born in the U.S. in a year = 4.1 x 10^6
Total weight = Average weight of a newborn x Number of babies born
Total weight = 7.5 pounds x (4.1 x 10^6)
To multiply two numbers written in scientific notation:
Mantissas: 7.5 x 4.1 = 30.75
Exponents: 10^6
So, the total weight in pounds of all babies born in the U.S. in a year is 30.75 x 10^6 pounds.
However, to express the answer in scientific notation with the exact decimal place, we need to divide the mantissa by 10 and increase the exponent by 1:
Total weight = 30.75 x 10^6 pounds
Total weight = 3.075 x 10^1 x 10^6 pounds
Total weight = 3.075 x 10^(1+6) pounds
Total weight = 3.075 x 10^7 pounds
Therefore, the approximate total weight of all babies born in the U.S. in a year is 3.075 x 10^7 pounds.