Question

Subtract

4.66 times 10^-5 - 7.34 times 10^-7

Answer
4.66 Xx 10^-5 - 7.34 x 10^-7

-4.5866 x 10^-5
2.68 x 10^2
4.5866 x 10^-5
-2.68 x 10^2
Answer
The U.S. national debt was $2.9617×1013
in 2021 and $3.98×1011
in 1971. Find how much the debt increased in the 50-year period. (1 point)
Responses

$3.0015×1013
3.0015 dollars times 10 superscript 13 baseline

$1.0183×1024
1.0183 dollars times 10 superscript 24 baseline

$2.9219×1011
2.9219 dollars times 10 superscript 11 baseline

$2.9219×1013
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

2.72×10−10
m
2.72 times 10 superscript negative 10 baseline m

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
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 platelet has a bigger diameter than a red blood cell by 5.17×10−6
m.
A platelet has a bigger diameter than a red blood cell by 5.17 times 10 superscript negative 6 baseline m.

A red blood cell has a bigger diameter than a platelet by 5.17×10−6
m.
A red blood cell has a bigger diameter than a platelet by 5.17 times 10 superscript negative 6 baseline m.

A red blood cell has a bigger diameter than a platelet by 9.83×10−6
m.
A red blood cell has a bigger diameter than a platelet by 9.83 times 10 superscript negative 6 baseline m.

A platelet has a bigger diameter than a red blood cell by 9.83×10−6
m.
Answer
China and India are the most populous countries in the world. China’s population is approximately 1.45×109
, while India’s population is approximately 1,400,000,000. How many more people live in China than in India?(1 point)
Responses

5×107
5 times 10 superscript 7 baseline

5×108
5 times 10 superscript 8 baseline

5×109
5 times 10 superscript 9 baseline

5×1010
Answer
Calculate 6.25×106−4.73×106 . Express your answer in scientific notation to 2 decimal places. (1 point)
Answer
The average distance from Earth to Mars is 2.25×108 km, and the distance from Earth to Neptune is 4.3514×109 km. How much farther is Neptune from Earth than Mars? Express your answer in scientific notation. Do not round your answer.(1 point)
Answer
Human hair grows at a rate of about 6.849×10−4 cm per hour to 2.329×10−2 cm per hour. The rate depends on gender, genetics, age, and health. Find the difference between the high end and the low end of the range. Express your answer in scientific notation. Do not round your answer.(1 point)
Answer
wronf
Answered by GPT 3.5
4.66 times 10^-5 - 7.34 times 10^-7 = 4.66E-5 - 7.34E-7 = 0.0000466 - 0.000000734 = 0.000045866
Answered by GPT 3.5
4.66 times 10^-5 - 7.34 times 10^-7 = 4.66E-5 - 7.34E-7 = 0.0000466 - 0.000000734 = 0.000045866

The correct answer is 4.5866 x 10^-5.
Answered by GPT 3.5
To find the increase in the U.S. national debt over the 50-year period, we subtract the debt in 1971 from the debt in 2021.

$2.9617×10^13 - $3.98×10^11 = $29.617×10^11 - $0.398×10^12 = $29.219×10^11

The correct answer is $2.9219×10^11.
Answered by GPT 3.5
To find the difference between the sizes of these atoms, we subtract the size of the oxygen atom from the size of the hydrogen atom.

1.2×10^(-10) m - 0.000000000152 m = 1.2×10^(-10) m - 1.52×10^(-10) m = -0.32×10^(-10) m

The correct answer is 3.2×10^(-11) m.
Answered by GPT 3.5
To determine which blood component has a bigger diameter, we compare the diameters of the platelet and the red blood cell.

Platelet diameter: 2.33×10^(-6) m
Red blood cell diameter: 0.0000075 m

Comparing the two diameters, we see that the red blood cell has a bigger diameter than the platelet.

To find the difference in diameter, we subtract the diameter of the platelet from the diameter of the red blood cell:

0.0000075 m - 2.33×10^(-6) m = 0.0000075 m - 0.00000233 m = 0.00000517 m

The correct answer is: A red blood cell has a bigger diameter than a platelet by 5.17×10^(-6) m.
Answered by GPT 3.5
To find the difference in population between China and India, we subtract the population of India from the population of China.

China's population: 1.45×10^9
India's population: 1,400,000,000

1.45×10^9 - 1,400,000,000 = 1,450,000,000 - 1,400,000,000 = 50,000,000

The correct answer is: 5×10^7. Therefore, 50 million more people live in China than in India.
Answered by GPT 3.5
To subtract the given numbers and express the answer in scientific notation to 2 decimal places, we can calculate:

6.25×10^6 - 4.73×10^6 = 1.52×10^6

Therefore, the answer is 1.52×10^6.
Answered by GPT 3.5
To find how much farther Neptune is from Earth than Mars, we need to subtract the distance from Earth to Mars from the distance from Earth to Neptune.

4.3514×10^9 km - 2.25×10^8 km = 4.3514×10^9 km - 0.225×10^9 km = 4.3514×10^9 km - 0.225×10^9 km = 4.1264×10^9 km

Therefore, Neptune is 4.1264×10^9 km farther from Earth than Mars.
Answered by GPT 3.5
To find the difference between the high end and low end of the range, we need to subtract the low end rate from the high end rate.

2.329×10^-2 cm/hr - 6.849×10^-4 cm/hr = 2.329×10^-2 cm/hr - 0.006849×10^-2 cm/hr = 0.02329 cm/hr - 0.00006849 cm/hr = 0.02322151 cm/hr

Therefore, the difference between the high end and low end of the range is 2.322151×10^-2 cm/hr.
Answered by GPT 3.5
I apologize for the mistake. Let's calculate the correct difference between the high end and low end of the range.

2.329×10^-2 cm/hr - 6.849×10^-4 cm/hr = 0.02329 cm/hr - 0.0006849 cm/hr = 0.0226051 cm/hr

Therefore, the correct difference between the high end and low end of the range is 2.26051×10^-2 cm/hr.