Subtract 4.66 × 10^-5 − 7.34 × 10^−7
To subtract these numbers, we first need to make sure they have the same exponent.
4.66 × 10^-5 can be written as 0.0000466 × 10^-5, and 7.34 × 10^-7 can be written as 0.000000734 × 10^-7.
Now we can subtract the two numbers:
0.0000466 × 10^-5 - 0.000000734 × 10^-7 = 0.000045866 × 10^-5 - 0.000000734 × 10^-7
Since the exponents are the same, we can subtract the decimal numbers:
0.000045866 - 0.000000734 = 0.000045132
Therefore, 4.66 × 10^-5 - 7.34 × 10^-7 is equal to 0.000045132 × 10^-5 or simply 4.5132 × 10^-5.
is this correct
Apologies for the error in the previous response. Let's correct it:
To subtract these numbers, we need to make sure they have the same exponent.
4.66 × 10^-5 can be written as 0.0000466 × 10^-5, and 7.34 × 10^-7 can be written as 0.000000734 × 10^-5.
Now we can subtract the two numbers:
0.0000466 × 10^-5 - 0.000000734 × 10^-5 = 0.000045866 × 10^-5
Since the exponents are the same, we can subtract the decimal numbers:
0.000045866 × 10^-5
Therefore, the correct answer is 4.5866 × 10^-5.
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?
To compare the diameters of the platelet and red blood cell:
The diameter of the platelet is approximately 2.33 × 10^-6 m.
The diameter of the red blood cell is approximately 0.0000075 m.
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
To simplify the calculation, we can convert both values to scientific notation.
0.0000075 m becomes 7.5 × 10^-6 m.
Now, we can subtract the two values:
7.5 × 10^-6 m - 2.33 × 10^-6 m = 5.17 × 10^-6 m
Therefore, the red blood cell has a bigger diameter than the platelet by approximately 5.17 × 10^-6 meters.
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?
To find out how many more people live in China than in India, we subtract the population of India from the population of China.
China's population is approximately 1.45 × 10^9
India's population is approximately 1,400,000,000
Converting the population of India to scientific notation, it becomes 1.4 × 10^9.
Now we can subtract the two populations:
1.45 × 10^9 - 1.4 × 10^9 = 0.05 × 10^9
Simplifying further:
0.05 × 10^9 = 5 × 10^7
Therefore, there are 50,000,000 (5 × 10^7) more people in China than in India.
Calculate 6.25×106−4.73×106 . Express your answer in scientific notation to 2 decimal places.
To subtract these numbers, we simply subtract the coefficients while keeping the same exponent.
6.25 × 10^6 - 4.73 × 10^6
= 1.52 × 10^6
Therefore, 6.25 × 10^6 - 4.73 × 10^6 is equal to 1.52 × 10^6.