Answer:
25 liters of the 16% solution should be added.
Step-by-step explanation:
pure acid amount + pure acid amount = total pure acid amount
0.02*10 + 0.16*x = 0.12*(10+x) <<<---=== it is your balance equation; x is the amount (in liters) of the 16% solution.
0.02*10 + 0.16x = 0.12*10 + 0.12*x
0.16*x - 0.12*x = 0.12*10 - 0.02*10
(0.16 - 0.12)*x = 0.12*10 - 0.02*10
x = %280.12%2A10-0.02%2A10%29%2F%280.16-0.12%29 = 25.
Answer. 25 liters of the 16% solution should be added.
Check. %280.02%2A10+%2B+0.16%2A25%29%2F%2810+%2B+25%29 = 0.12 = 12% of concentration of the final mixture. ! Correct !
Answer:
The right answer is A (x=2,y=-1)
Hi there!
Let's solve this equation step by step!

First work out the parenthesis, which can for instance be done using rainbow technique.

Subtract 2u from both sides.

Subtract 38 from both sides.

And finally divide both sides by -6, in order to isolate the variable u. Remember that dividing a negative by a negative gives a positive outcome.

Hence, the answer is u = 9.
~ Hope this helps you!
Answer:
D. None of these
Step-by-step explanation:
this is a Equilateral triangle a triangle in where all three sides have the same length.
Answer:
N= 110 M+ 55?
I'm just trying my best to help you