Mathematics
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OpenStudy (anonymous):
What is 7.8 × 10^5 m/h in kilometers per day?
A.
3.24 × 10^10 km/day
B.
3.24 × 10^8 km/day
C.
1.872 × 10^6 km/day
D.
1.872 × 10^4 km/day
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OpenStudy (anonymous):
@jim_thompson5910 I think its C can you make sure?
OpenStudy (jennyrlz):
Hello ^.^
OpenStudy (anonymous):
Hi
OpenStudy (jennyrlz):
This is conversion correct :)?
OpenStudy (anonymous):
yea but i need help
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OpenStudy (jennyrlz):
one sec, let me try and solve it on my end first xD
OpenStudy (anonymous):
Okay thanks :D
OpenStudy (jennyrlz):
Just wondering is that supposed ti be 10^5?
OpenStudy (anonymous):
No there is not 10^5 on my part
OpenStudy (jennyrlz):
ok just making sure xD
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OpenStudy (anonymous):
lol okay :3
jimthompson5910 (jim_thompson5910):
so the intial problem isn't \[\Large 7.8 \times 10^5\] ??
OpenStudy (anonymous):
Yes it is sorry i thought you ment one of the awnsers
OpenStudy (jennyrlz):
okkkkkk
thanks xD
i was gonna say it isnt making sense hahaha
OpenStudy (jennyrlz):
ok now let me give it a go :)
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OpenStudy (jennyrlz):
you know what i will work it out on here, tell me if you have any questions
OpenStudy (anonymous):
okay
OpenStudy (jennyrlz):
so we need to keep in mind these conversions:
hours in a day
meters in a kilometer
OpenStudy (anonymous):
24 1000 i think
OpenStudy (jennyrlz):
yup if you ever get confused just remebered King, henry, died, by , drinking, chocalate, milk
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OpenStudy (anonymous):
lol thanks X3
OpenStudy (jennyrlz):
(7.8x10^5m)/1h) x (24hr)/1D) x (1km/1000m)
got it :D?
OpenStudy (jennyrlz):
now to simplify things lets put it in scientific notation :)
OpenStudy (anonymous):
yea
OpenStudy (jennyrlz):
(7.8x10^5m)/1hr) x (2.4x10^1hr)/1D) x (1km/(1x10^3m)
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OpenStudy (anonymous):
1.872?
OpenStudy (jennyrlz):
yea :D
OpenStudy (anonymous):
so now its C or D
OpenStudy (jennyrlz):
yup :)
OpenStudy (jennyrlz):
wait>?
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OpenStudy (anonymous):
oops wrong thing 1.872 × 10^4 km/day
OpenStudy (jennyrlz):
yup :D
OpenStudy (anonymous):
thanks :D
OpenStudy (jennyrlz):
yay congratulations!!
-claps-
OpenStudy (anonymous):
X3
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OpenStudy (jennyrlz):
well time for me to take and english final, wish me luck!
OpenStudy (anonymous):
you to!
OpenStudy (jennyrlz):
you have to take an english final? o3o