Answer:
wym by 4 decimal places
Step-by-step explanation:
Answer: If the first one is addition, which I'm pretty sure it is, the answer is
1 1/10
For the second problem, I'm pretty sure its subtraction, so the answer is 1/9.
Step-by-step explanation:
Answer:
The chemist needs to add 400mL of 40% solution.
Step-by-step explanation:
The equation
gives the percent concentration 
of the final mixture, when 
mL of the 40% solution are added.
Now we are asked, how many milliliters of the 40% solution should the chemist add to get final percent concentration 
; this is just a matter of solving the equation
and we solve it the following way:
Thus, the chemist needs 400mL of 40% solution to get 30% concentration of the final mixture.
An irrational<span> number is a number that cannot be exactly expressed as a ratio of two integers. Hope this helps!</span>
Answer:
its simplifed as much as it can.
Step-by-step explanation:
