Calculate 6.25×106−4.73×106 . 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)
To find out 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 = 4.129×10^9 km
it says its wrong
Apologies for the mistake. Let's recalculate:
4.3514×10^9 km - 2.25×10^8 km = 4.1269×10^9 km
Therefore, Neptune is approximately 4.1269×10^9 km farther from Earth than Mars.
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)
WRONG
To find the difference between the high end and the low end of the range, we subtract the low end from the high end of the range:
2.329×10^(-2) cm/hr - 6.849×10^(-4) cm/hr = 2.2601×10^(-2) cm/hr
Therefore, the difference between the high end and the low end of the range is approximately 2.2601×10^(-2) cm/hr.