Calculate 6.25×10^6−4.73×10^6 . Express your answer in scientific notation to 2 decimal places. (1 point)
6.25×10^6−4.73×10^6 = 1.52×10^6
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)
km
To find how much farther Neptune is from Earth than Mars, we need to subtract the distance from Mars from the distance from Neptune.
4.3514×109 km - 2.25×108 km = 4.1265×109 km
Therefore, Neptune is 4.1265×109 km farther from Earth than Mars.
it says its wrong
I apologize for the error. Let me recalculate.
The distance from Neptune to Earth is 4.3514×10^9 km. The distance from Mars to Earth is 2.25×10^8 km.
To find how much farther Neptune is from Earth than Mars, we subtract the distance from Mars from the distance from Neptune:
4.3514×10^9 km - 2.25×10^8 km = 4.1265×10^9 km
Therefore, Neptune is 4.1265×10^9 km farther from Earth than Mars.
To calculate the subtraction of two numbers in scientific notation, we need to make sure that both numbers have the same exponent. Let's break down the given numbers first:
6.25 × 10^6 = 6250000
4.73 × 10^6 = 4730000
Now, subtract the two numbers: 6250000 - 4730000 = 1520000
Since the original numbers were in scientific notation, we express the result in scientific notation as well.
1520000 can be written as 1.52 × 10^6.
Therefore, the expression 6.25×10^6 - 4.73×10^6 in scientific notation to 2 decimal places is:
1.52 × 10^6
To subtract the numbers in scientific notation, we need to make sure that the exponents are the same. In this case, we have:
6.25 × 10^6 - 4.73 × 10^6
Since the exponents are the same (both are 6), we can subtract the coefficients directly:
6.25 - 4.73 = 1.52
Now, to express the answer in scientific notation with two decimal places, we need to move the decimal point of 1.52 until we have a number between 1 and 10. Since the decimal point is currently after the 2, we can move it two places to the left:
1.52 × 10^6
Therefore, the answer is 1.52 × 10^6.