Answer:
I'm sorry if this is wrong but try 16 it's probably wrong tho sorry
His answer and process are both incorrect because he needs to divide 10^-4 by 10^-3 to get 4*10^-1 and the answer is .025 times larger.
Divide both sides by 4pi, then take the square root of both sides. You will not get an actual value, but the answer should be
Answer:
The nurse should use 200cc of the 10% saline solution in order to produce a 20% saline solution.
Step-by-step explanation:
to the given mix we add a quantity of a lower mix to generate another.
50cc at 60% + Xcc at 10% = (50 + X)cc at 20%
50 x 60% + X x 10% = (50 + X) x 20%
30 + 0.1X = 10 + 0.2X
30 - 10 = 0.2X - 0.1X
20 = 0.1X
20/0.1 = X
X = 200