Answer:
200 kg
Step-by-step explanation:
If w is the amount of water added, then the concentration of the solution is ...
salt/solute = 100(0.30)/(100 +w) = 0.10
30 = 10 +0.10w . . . . . simplify
20 = 0.10w . . . . . . . . subtract 10
20/0.10 = w = 200 . . . . divide by 0.10
200 kg of water must be added to dilute the solution to 10%.
Answer:
Step-by-step explanation:
The formula for the standard error of the difference between the estimates od the population proportions is:
This is expected, as the variance of a sum (or a substraction) of two random variables is equal to the sum of the variance of the two variables.
Then, the standard error (or standard deviation) is the square root of this variance.
Answer:
3:5
Step-by-step explanation:
12:20
6:10
3:5
Answer:
Integrity means following your moral or ethical convictions and doing the right thing in all circumstances, even if no one is watching you. Having integrity means you are true to yourself and would do nothing that demeans or dishonors you.
Step-by-step explanation:
hope it helps :)
6/1 divided by 3/8
6/1 x 8/3
if you cross multiply, 2 can go into 6 and 8
6 divided 2 is 3
8 divided 2 is 4
so
6/1 would be 3/1
8/3 would be 4/3
3/1 x 4/3 = 12/3
12/3 simplified is 4