To find the increase in the national debt over 50 years, we need to subtract the initial debt in 1971 from the debt in 2021.
$2.9617 x 10^13 - $3.98 x 10^11 = $2.9617 x 10^13 - $0.398 x 10^13 = $2.5637 x 10^13
Therefore, the debt increased by $2.5637 x 10^13.
The correct answer is $2.9219 × 10^13.
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. (1 point)
• $3.0015 × 10^13
• $2.9219 × 10^13
• $1.0183 x 10^24
• $2.9219 × 10^11
11 answers
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? (1 point)
• 2.72 × 10^-10 m
• 3.2 × 10^-10 m
• 3.2 × 10^-9 m
• 3.2 × 10^-11m
What is the difference between the sizes of these atoms in scientific notation? (1 point)
• 2.72 × 10^-10 m
• 3.2 × 10^-10 m
• 3.2 × 10^-9 m
• 3.2 × 10^-11m
To find the difference between the sizes of the atoms, we need to subtract the size of the hydrogen atom from the size of the oxygen atom.
0.000000000152 m - 1.2 x 10^-10 m = 0.000000000152 m - 0.00000000000012 m
To subtract these numbers, we need to express them in the same units:
0.000000000152 m - 0.00000000000012 m = 0.000000000152 m - 0.000000000152 m
This simplifies to:
0 m
Therefore, the difference between the sizes of the atoms is 0 in scientific notation.
The correct answer is none of the options provided.
0.000000000152 m - 1.2 x 10^-10 m = 0.000000000152 m - 0.00000000000012 m
To subtract these numbers, we need to express them in the same units:
0.000000000152 m - 0.00000000000012 m = 0.000000000152 m - 0.000000000152 m
This simplifies to:
0 m
Therefore, the difference between the sizes of the atoms is 0 in scientific notation.
The correct answer is none of the options provided.
If you had to pick one
If I had to pick one answer from the given options, it would be: None of the options provided.
Its one of those options
I'm sorry for the confusion. If I had to pick one of the options provided, the closest answer would be:
• 3.2 × 10^-10 m
However, please note that this answer may not be exact as the actual difference between the sizes of the atoms is 0.
• 3.2 × 10^-10 m
However, please note that this answer may not be exact as the actual difference between the sizes of the atoms is 0.
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? (1 point)
• A platelet has a bigger diameter than a red blood cell by 9.83 × 10^-5 m.
• A red blood cell has a bigger diameter than a platelet by 9.83 x 10^-5 m.
• A red blood cell has a bigger diameter than a platelet by 5.17 x 10^-0 m.
• A platelet has a bigger diameter than a red blood cell by 5.17 x 10^-6 m.
• A platelet has a bigger diameter than a red blood cell by 9.83 × 10^-5 m.
• A red blood cell has a bigger diameter than a platelet by 9.83 x 10^-5 m.
• A red blood cell has a bigger diameter than a platelet by 5.17 x 10^-0 m.
• A platelet has a bigger diameter than a red blood cell by 5.17 x 10^-6 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 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.
Comparing these two values, we can see that the red blood cell has a larger diameter compared to the platelet.
To find the approximate difference in diameter, we subtract the diameter of the platelet from the diameter of the red blood cell:
0.0000075 m - 2.33 x 10^-6 m = 0.0000065 m
Therefore, the red blood cell has a bigger diameter than the platelet, and the approximate difference in diameter is 0.0000065 m.
The correct answer is "A red blood cell has a bigger diameter than a platelet by 6.5 x 10^-6 m."
The diameter of the platelet is 2.33 x 10^-6 m, and the diameter of the red blood cell is 0.0000075 m.
Comparing these two values, we can see that the red blood cell has a larger diameter compared to the platelet.
To find the approximate difference in diameter, we subtract the diameter of the platelet from the diameter of the red blood cell:
0.0000075 m - 2.33 x 10^-6 m = 0.0000065 m
Therefore, the red blood cell has a bigger diameter than the platelet, and the approximate difference in diameter is 0.0000065 m.
The correct answer is "A red blood cell has a bigger diameter than a platelet by 6.5 x 10^-6 m."
China and India are the most populous countries in the world. China's population is approximately 1.45 × 10°, while India's population is approximately 1,400,000,000. How many more people live in China than in India? (1 point)
• 5 × 10^10
• 5 × 10^9
• 5 x 10^7
• 5 x 10^8
• 5 × 10^10
• 5 × 10^9
• 5 x 10^7
• 5 x 10^8
To find the difference in population between China and India, we subtract the population of India from the population of China.
China's population is approximately 1.45 x 10^9, while India's population is approximately 1,400,000,000.
1.45 x 10^9 - 1,400,000,000 = 1.45 x 10^9 - 1.4 x 10^9 = 0.05 x 10^9
This simplifies to:
0.05 x 10^9 = 5 x 10^8
Therefore, China has approximately 500,000,000 (5 x 10^8) more people than India.
The correct answer is "5 x 10^8".
China's population is approximately 1.45 x 10^9, while India's population is approximately 1,400,000,000.
1.45 x 10^9 - 1,400,000,000 = 1.45 x 10^9 - 1.4 x 10^9 = 0.05 x 10^9
This simplifies to:
0.05 x 10^9 = 5 x 10^8
Therefore, China has approximately 500,000,000 (5 x 10^8) more people than India.
The correct answer is "5 x 10^8".
1 answer