Question

Help

Answer 1

@thomaster, @some_someone , @Jhannybean

Answer 2

@thomaster can you help me please

Answer 3

@amistre64 @SnuggieLad anyone

Answer 4

@ash2326 please

Answer 5

@IxairaS I don't have idea about the first one and second one.
I can help you with the last

Answer 6

Amount of iodine doesn;t matter here
In 8.10 days half of the iodine will decay. So half will remain

In next 8.10 days half of the remaining will decay.

@IxairaS can you tell how much of Iodine will remain now?

Answer 7

Okay

Answer 8

C 40.5

Answer 9

can you help me with a couple more

Answer 10

That one is not over

Answer 11

i know so is it C am I incorrect

Answer 12

First tell me how much will remain after the next 8.10 days?

Answer 13

i dont know :(

Answer 14

1-> 1/2 in 8.10 days
so it will get half further in next 8.10 days, so 1/4 th will remain

Do you get this?

Answer 15

no but I think its B

Answer 16

We will arrive at the answer, do you get this part?

Answer 17

a bit

Answer 18

Ok, so it'll further get half in 8.10 days. How much will remain now?

Answer 19

4.05

Answer 20

\[\frac1 2\times \frac 1 4\]

Answer 21

2/4 or 1/2

Answer 22

What's half of 1/4?

Answer 23

0.25