r_josh10
  • r_josh10
A truck travels 239 miles in 4.2 hours. What is his average speed? A 1003.8 mi/hr B 113.8 mi/hr C 56.9 mi/hr D 0.04 mi/hr
Mathematics
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SOLVED
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schrodinger
  • schrodinger
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r_josh10
  • r_josh10
@dan815
r_josh10
  • r_josh10
@paki
r_josh10
  • r_josh10
@texaschic101

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More answers

anonymous
  • anonymous
wouldn't you multiply 239 * 4.2 to get the answer?
r_josh10
  • r_josh10
I think the formula is S=D/T
MrNood
  • MrNood
@RavenTeenTitans NO you divide miles/hours to get mph
r_josh10
  • r_josh10
is the formula right tho? @MrNood
anonymous
  • anonymous
Oh right, the formula. I'm becoming more and more forgetful each day.
r_josh10
  • r_josh10
np @RavenTeenTitans
r_josh10
  • r_josh10
Is it C? Since S=D/T, S=239/4.2?
MrNood
  • MrNood
well the formula IS speed = distance/time but this is usually written v=s/t using s for distance, t for time and v for velocity (or speed in this case)
xMissAlyCatx
  • xMissAlyCatx
You're going to divide the two numbers because your formula would be \[v=\frac{ s }{ t }\] so it would look like.. \[v=\frac{ 239 }{ 4.2 }\]
r_josh10
  • r_josh10
so is C right?
xMissAlyCatx
  • xMissAlyCatx
You're correct. :)
r_josh10
  • r_josh10
Thanks! @xMissAlyCatx
MrNood
  • MrNood
if you understand theconcept and are confident in your calculation the just go with it. There is not always someone to confirm tyour work in 'real life'
xMissAlyCatx
  • xMissAlyCatx
You're welcome @r_josh10 and @MrNood is right. If you really are confident in your answer then go with it. But we will be here to assist you if you need it! :)

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