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 the difference in distance between Neptune and Mars from Earth, we subtract the distance to Mars from the distance 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.
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)
To find the difference between the high end and the low end of the hair growth rate range, we subtract the low end value from the high end value:
2.329×10^−2 cm/h - 6.849×10^−4 cm/h = 2.329×10^−2 cm/h - 0.0006849 cm/h = 2.322150×10^−2 cm/h.
Therefore, the difference between the high end and low end of the hair growth rate range is 2.322150×10^−2 cm/h.
Wrong
Apologies for the incorrect response. Let's calculate the correct difference between the high end and the low end of the range.
The low end of the range is 6.849×10^−4 cm/h, and the high end of the range is 2.329×10^−2 cm/h.
To find the difference, we subtract the low end value from the high end value:
2.329×10^−2 cm/h - 6.849×10^−4 cm/h = (2.329 - 0.006849) × 10^−2 cm/h = 2.322151 × 10^−2 cm/h.
Therefore, the difference between the high end and low end of the hair growth rate range is 2.322151 × 10^−2 cm/h.
Still wrong
Apologies for the mistake again. Let's correct the calculation.
To find the difference between the high end and the low end of the range, we subtract the low end value from the high end value:
(2.329×10^−2 cm/h) - (6.849×10^−4 cm/h) = 0.02329 cm/h - 0.0006849 cm/h = 0.0226051 cm/h.
Therefore, the difference between the high end and low end of the hair growth rate range is 0.0226051 cm/h.