Answer:
Equation 2 is correct
Step-by-step explanation:
Equation 1 is 2, not 1.5
Answer:
The amount of salt required is 0.3685 grams.
Step-by-step explanation:
20.9% of 1 gram of salt is chlorine, which means the grams of chlorine in 1 gram of salt are

Now, to make 220 ppm solution, it must be that

where
is the grams of chlorine required.
We rearrange the equation and solve for 





since 1 gram of salt has 0.209 grams of chlorine, 0.07702g of chlorine corresponds to

Thus the amount of salt required is 0.3685 grams.
Answer:
The answer is 0.068.
Step-by-step explanation:
0.17 x 0.4 is 0.068
Answer:
second option is correct onee
Step-by-step explanation:
mark me brainliest
In a 2-way frequency table, you take the row entry and divide it by its row total to get a decimal.
For your example:
It starts out like this:
sunny snowy
Male: 17 11
Female: 15 16
Add the rows up.
sunny snowy total
Male: 17 11 28
Female: 15 16 31
Then divide the number the by the total:
sunny snowy total
Male: 17/28 11/28 28
Female: 15/31 16/31 31
Yours says to round to the 1000th place, so it ends up like:
sunny snowy
Male: .607 .393
Female: .484 .515
Hope that helps!!