Question

John studied for 22.5 hours over a period of 3.5 days. On average, about how many hours did he study each day?

Answer 1

@daffygreasy, are you there?

Answer 2

yes @OakTree

Answer 3

Okay. So do you know the formula for average?

Answer 4

I got it I just divide 22.5 by 3.5 @OakTree

Answer 5

Right.

Answer 6

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

Answer 7

So you just subtract the times. Get it?

Answer 8

ok so its going to 28.004-27.949 @OakTree

Answer 9

Right. What did you get?

Answer 10

0.005 @OakTree

Answer 11

Not quite, it's actually 0.056. Do you see why?

Answer 12

no help plz @OakTree

Answer 13

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?

Answer 14

95 @OakTree

Answer 15

Not quite, try again.

Answer 16

calculator gave me the same answer 95 @OakTree

Answer 17

You're typing it in wrong, then. It's 55.

Answer 18

ok @OakTree

Answer 19

So then we add back the decimal place, and we get 0.055.

Answer 20

ok I see @OakTree

Answer 21

Great. Glad to help.

Answer 22

need help on one more if you don't mind @OakTree

Answer 23

Alice bought 8/9 of a pound of grapes and ate 1/3 of a pound. How many pounds were left? @OakTree