subtract numbers in scientific notation quick check ANSWERS PLS 5 QUESTIONS I THINK 1 IS A BUT IM NOT SURE HELP ASAP ILL DO WHATEVER PLS
To find how much the debt increased in the 50-year period, we subtract the debt in 1971 from the debt in 2021:
Debt increase = $2.9617 x 10^13 - $3.98 x 10^11
To subtract the numbers in scientific notation, we need to ensure that the exponents are the same. In this case, we need to rewrite the debt in 1971 in scientific notation by moving the decimal point one place to the right:
Debt increase = $2.9617 x 10^13 - $39.8 x 10^9
Now we can subtract the coefficients:
Debt increase = ($2.9617 - $39.8) x 10^13 (subtract the coefficients)
Debt increase = $2.9219 x 10^13
Therefore, the correct answer is C. $2.9219 x 10^13.
To find the difference between the sizes of the hydrogen and oxygen atoms, we subtract the size of the hydrogen atom from the size of the oxygen atom:
Difference = 0.000000000152 m - 1.2 x 10^-10 m
To subtract the numbers in scientific notation, we need to ensure that the exponents are the same. In this case, we need to rewrite 0.000000000152 m in scientific notation by moving the decimal point 11 places to the right:
Difference = 1.52 x 10^-10 m - 1.2 x 10^-10 m
Now we can subtract the coefficients:
Difference = (1.52 - 1.2) x 10^-10 (subtract the coefficients)
Difference = 0.32 x 10^-10
Since 0.32 x 10^-10 is the same as 3.2 x 10^-11, the correct answer is B. 3.2 x 10^-11 m.
To determine which blood component has a bigger diameter and by approximately how much, we need to compare the diameters of the platelet and the red blood cell.
The diameter of the platelet is 2.33 x 10^-6 m, and the diameter of the red blood cell is 0.0000075 m.
To compare the two, we subtract the diameter of the platelet from the diameter of the red blood cell:
0.0000075 m - 2.33 x 10^-6 m
To subtract the numbers in scientific notation, we need to ensure that the exponents are the same. In this case, we need to rewrite 0.0000075 m in scientific notation, which becomes 7.5 x 10^-6 m.
0.0000075 m - 2.33 x 10^-6 m = 7.5 x 10^-6 m - 2.33 x 10^-6 m
Now we can subtract the coefficients:
(7.5 - 2.33) x 10^-6 m = 5.17 x 10^-6 m
Therefore, the correct answer is A. A red blood cell has a bigger diameter than a platelet by 5.17 x 10^-6 m.
To find the difference in population between China and India, we subtract the population of India from the population of China:
1.45 x 10^9 - 1,400,000,000
Since the population of India is already in standard form, we don't need to convert it to scientific notation.
1.45 x 10^9 - 1,400,000,000 = 1.45 x 10^9 - 1.4 x 10^9
Now we can subtract the coefficients:
(1.45 - 1.4) x 10^9 = 0.05 x 10^9
Since 0.05 x 10^9 is the same as 5 x 10^7, the correct answer is B. 5 x 10^7.
I'm sorry, but I cannot provide answers to specific questions without knowing the exact numbers and calculations involved. However, I can guide you on how to subtract numbers in scientific notation if you provide the specific question.
The U.S. national debt was $2.9617 x 10^13 in 2021 and $3.98 x 10^11 in 1971. Find how much the debt increased in the 50-year period.
A. $2.9219 x 10^11
B. $3.0015 x 10^13
C. $2.9219 x 10^13
D. $1.0183 x 10^24
The size of a hydrogen atom is about 1.2 x 10^-10 m across. The size of an oxygen atom is 0.000000000152 m across. What is the difference between the sizes of these atoms in scientific notation.
A. 2.72 x 10^-10 m
B. 3.2 x 10^-11 m
C. 3.2 x 10^-9 m
D. 3.2 x 10^-10 m
Platelets and red blood cells are components of the blood. A typical platelet and red blood cell have diameters of approximately 2.33 x 10^-6 m and 0.0000075 m, respectively. Which blood component has a bigger diameter, and approximately by how much?
A. A red blood cell has a bigger diameter than a platelet by 5.17 x 10^-6 m.
B. A platelet has a bigger diameter than a red blood cell by 9.83 x 10^-6 m.
C. A platelet has a bigger diameter than a red blood cell by 5.17 x 10^-6 m.
D. A red blood cell has a bigger diameter than a platelet by 9.83 x 10^-6 m.
China and India are the most populous countries in the world. China's population is approximately 1.45 x 10^9. while India's population is approximately 1,400,000,000. How many more people live in China than in India?
A. 5 x 10^9
B. 5 x 10^7
C. 5 x 10^8
D. 5 x 10^10