Question
Subtract 4.66 × 10^(−5) − 7.34 × 10^−7 (1 point)
Responses
−2.68 × 10^2
negative 2.68 times 10 squared
4.5866 × 10^−5
4.5866 times 10 superscript negative 5 baseline
2.68 × 10^2
2.68 times 10 squared
−4.5866 × 10^−5
Responses
−2.68 × 10^2
negative 2.68 times 10 squared
4.5866 × 10^−5
4.5866 times 10 superscript negative 5 baseline
2.68 × 10^2
2.68 times 10 squared
−4.5866 × 10^−5
Answers
Answer
The U.S. national debt was $2.9617 × 10^13 in 2021 and $3.98 × 10^11 in 1971. Find how much the debt increased in the 50-year period. (1 point)
Responses
$2.9219×1011
2.9219 dollars times 10 superscript 11 baseline
$2.9219×1013
2.9219 dollars times 10 superscript 13 baseline
$1.0183×1024
1.0183 dollars times 10 superscript 24 baseline
$3.0015 × 10^13
Responses
$2.9219×1011
2.9219 dollars times 10 superscript 11 baseline
$2.9219×1013
2.9219 dollars times 10 superscript 13 baseline
$1.0183×1024
1.0183 dollars times 10 superscript 24 baseline
$3.0015 × 10^13
Answer
The size of a hydrogen atom is about 1.2 × 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)
Responses
3.2×10−11 m
3.2 times 10 superscript negative 11 baseline m
3.2 ×10−10 m
3.2 times 10 superscript negative 10 baseline m
3.2×10−9 m
3.2 times 10 superscript negative 9 baseline m
2.72×10−10 m
2.72 times 10 superscript negative 10 baseline m
Responses
3.2×10−11 m
3.2 times 10 superscript negative 11 baseline m
3.2 ×10−10 m
3.2 times 10 superscript negative 10 baseline m
3.2×10−9 m
3.2 times 10 superscript negative 9 baseline m
2.72×10−10 m
2.72 times 10 superscript negative 10 baseline m
Answer
Platelets and red blood cells are components of the blood. A typical platelet and red blood cell have diameters of approximately 2.33 × 10^−6 m and 0.0000075 m, respectively. Which blood component has a bigger diameter, and approximately by how much?(1 point)
Responses
a) A platelet has a bigger diameter than a red blood cell by 9.83 × 10^(−6) m.
b) A red blood cell has a bigger diameter than a platelet by 9.83 × 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 5.17 × 10^(−6) m.
Responses
a) A platelet has a bigger diameter than a red blood cell by 9.83 × 10^(−6) m.
b) A red blood cell has a bigger diameter than a platelet by 9.83 × 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 5.17 × 10^(−6) m.
Answer
China and India are the most populous countries in the world. China’s population is approximately 1.45 × 10^9 , while India’s population is approximately 1,400,000,000. How many more people live in China than in India?(1 point)
Responses
a) 5 × 10^7
5 times 10 superscript 7 baseline
b) 5 × 10^8
5 times 10 superscript 8 baseline
c) 5 × 10^9
5 times 10 superscript 9 baseline
d) 5 × 10^10
Responses
a) 5 × 10^7
5 times 10 superscript 7 baseline
b) 5 × 10^8
5 times 10 superscript 8 baseline
c) 5 × 10^9
5 times 10 superscript 9 baseline
d) 5 × 10^10
Answered by
GPT 3.5
negative 4.5866 times 10 superscript negative 5 baseline
Answered by
GPT 3.5
To find how much the debt increased in the 50-year period, we need to subtract the debt in 1971 from the debt in 2021.
Debt increase = $2.9617 × 10^13 - $3.98 × 10^11
Simplifying the calculation, we get:
Debt increase = $2.9617 × 10^13 - $0.398 × 10^13 = $2.9219 × 10^13
Therefore, the correct response is:
$2.9219 × 10^13
Debt increase = $2.9617 × 10^13 - $3.98 × 10^11
Simplifying the calculation, we get:
Debt increase = $2.9617 × 10^13 - $0.398 × 10^13 = $2.9219 × 10^13
Therefore, the correct response is:
$2.9219 × 10^13
Answered by
GPT 3.5
To find the difference between the sizes of the hydrogen and oxygen atoms, we need to subtract the size of the hydrogen atom from the size of the oxygen atom.
Difference = 0.000000000152 m - 1.2 × 10^(-10) m
Simplifying the calculation, we get:
Difference = 0.000000000152 m - 0.00000000012 m = 0.000000000032 m
Expressed in scientific notation, this is:
3.2 × 10^(-11) m
Therefore, the correct response is:
3.2 × 10^(-11) m
Difference = 0.000000000152 m - 1.2 × 10^(-10) m
Simplifying the calculation, we get:
Difference = 0.000000000152 m - 0.00000000012 m = 0.000000000032 m
Expressed in scientific notation, this is:
3.2 × 10^(-11) m
Therefore, the correct response is:
3.2 × 10^(-11) m
Answered by
GPT 3.5
To determine which blood component has a bigger diameter, we need to compare the diameters of the platelet and red blood cell.
Platelet diameter: 2.33 × 10^(-6) m
Red Blood Cell diameter: 0.0000075 m
Comparing these values, we can see that the diameter of a red blood cell is larger than that of a platelet.
To find the difference in diameter, we subtract the diameter of the platelet from the diameter of the red blood cell:
Difference = 0.0000075 m - 2.33 × 10^(-6) m
Simplifying the calculation, we get:
Difference = 0.0000075 m - 0.00000233 m = 0.00000517 m
Expressed in scientific notation, this is:
5.17 × 10^(-6) m
Therefore, the correct response is:
c) A platelet has a bigger diameter than a red blood cell by 5.17 × 10^(-6) m.
Platelet diameter: 2.33 × 10^(-6) m
Red Blood Cell diameter: 0.0000075 m
Comparing these values, we can see that the diameter of a red blood cell is larger than that of a platelet.
To find the difference in diameter, we subtract the diameter of the platelet from the diameter of the red blood cell:
Difference = 0.0000075 m - 2.33 × 10^(-6) m
Simplifying the calculation, we get:
Difference = 0.0000075 m - 0.00000233 m = 0.00000517 m
Expressed in scientific notation, this is:
5.17 × 10^(-6) m
Therefore, the correct response is:
c) A platelet has a bigger diameter than a red blood cell by 5.17 × 10^(-6) m.
Answered by
GPT 3.5
To find how many more people live in China than in India, we need to subtract the population of India from the population of China.
China's population: 1.45 × 10^9
India's population: 1,400,000,000
Difference = 1.45 × 10^9 - 1,400,000,000
To perform the subtraction, we convert China's population to standard form:
1.45 × 10^9 = 1,450,000,000
Now, we can calculate the difference:
Difference = 1,450,000,000 - 1,400,000,000 = 50,000,000
Expressed in scientific notation, this is:
5 × 10^7
Therefore, the correct response is:
a) 5 × 10^7
China's population: 1.45 × 10^9
India's population: 1,400,000,000
Difference = 1.45 × 10^9 - 1,400,000,000
To perform the subtraction, we convert China's population to standard form:
1.45 × 10^9 = 1,450,000,000
Now, we can calculate the difference:
Difference = 1,450,000,000 - 1,400,000,000 = 50,000,000
Expressed in scientific notation, this is:
5 × 10^7
Therefore, the correct response is:
a) 5 × 10^7
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