Question

What is 7.8 × 105 m/h in kilometers per day? A. 3.24 × 1010 km/day B. 3.24 × 108 km/day C. 1.872 × 106 km/day D. 1.872 × 104 km/day

Answer 1

please explane how you got the answer too

Answer 2

will become fan

Answer 3

Is that meters/hour into km/day?

Answer 4

yes

Answer 5

are you still there

Answer 6

How many hours in a day? How many meters in a kilometer?

Answer 7

24 1000 i think b am i corect

Answer 8

are you still there

Answer 9

\[\frac{7.8\times10^5\text{ m}}{1\text{ hr}}\times\frac{24\text{ hr}}{1\text{ day}}\times\frac{1\text{ km}}{1000\text{ m}}\]
In terms of scientific notation:
\[\frac{7.8\times10^5\text{ m}}{1\text{ hr}}\times\frac{2.4\times10^1\text{ hr}}{1\text{ day}}\times\frac{1\text{ km}}{1\times10^3\text{ m}}\]
The units will cancel out nicely:
\[\frac{7.8\times10^5}{1}\times\frac{2.4\times10^1}{1\text{ day}}\times\frac{1\text{ km}}{10^3}\]
Reduce the powers of 10:
\[(7.8\times2.4)\times10^3\frac{\text{km}}{\text{day}}\]

Answer 10

And you have
\[7.8\times2.4=18.72=1.872\times10^1\]
so you have
\[(1.872\times10^1)\times10^3\frac{\text{km}}{\text{day}}=1.872\times10^4\frac{\text{km}}{\text{day}}\]

Answer 11

Make sense?

Answer 12

your answer is not an option though

Answer 13

Have you considered checking D?