anonymous
  • anonymous
John studied for 22.5 hours over a period of 3.5 days. On average, about how many hours did he study each day?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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OakTree
  • OakTree
@daffygreasy, are you there?
anonymous
  • anonymous
yes @OakTree
OakTree
  • OakTree
Okay. So do you know the formula for average?

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More answers

anonymous
  • anonymous
I got it I just divide 22.5 by 3.5 @OakTree
OakTree
  • OakTree
Right.
anonymous
  • anonymous
but can u help me on this one im not that smart in math) Nancy’s 50-meter freestyle swim time was 28.004 seconds. Betty’s 50-meter freestyle swim time was 27.949 seconds. What was the difference between Nancy’s and Betty’s swim times? @OakTree
OakTree
  • OakTree
So you just subtract the times. Get it?
anonymous
  • anonymous
ok so its going to 28.004-27.949 @OakTree
OakTree
  • OakTree
Right. What did you get?
anonymous
  • anonymous
0.005 @OakTree
OakTree
  • OakTree
Not quite, it's actually 0.056. Do you see why?
anonymous
  • anonymous
no help plz @OakTree
OakTree
  • OakTree
Okay. So you subtract the decimals. We can make this super easy by just ignoring the decimals for now and then bringing them back later. What's 28,004 - 27,949?
anonymous
  • anonymous
95 @OakTree
OakTree
  • OakTree
Not quite, try again.
anonymous
  • anonymous
calculator gave me the same answer 95 @OakTree
OakTree
  • OakTree
You're typing it in wrong, then. It's 55.
anonymous
  • anonymous
ok @OakTree
OakTree
  • OakTree
So then we add back the decimal place, and we get 0.055.
anonymous
  • anonymous
ok I see @OakTree
OakTree
  • OakTree
Great. Glad to help.
anonymous
  • anonymous
need help on one more if you don't mind @OakTree
anonymous
  • anonymous
Alice bought 8/9 of a pound of grapes and ate 1/3 of a pound. How many pounds were left? @OakTree

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