Answer:
150 mL
Step-by-step explanation:
Let x represent the quantity of 75% solution needed. The total amount of alcohol in the 60% mixture will be ...
75%·x + 10%·45 = 60%·(x+45) . . . . . there will be x+45 mL of solution in the end
0.15x = 22.5 . . . . . . . . . . . . . . . . . . . . simplify, subtract .60x+4.5
22.5/0.15 = x = 150 . . . . . . . . . . . . . . mL of 75% solution needed
You will need 150 mL of the 75% solution.
Answer:
7 hours
Step-by-step explanation:
78-15=63
63 divided by 9= 7
M is a letter your welcome
(6x+4) hope this helped
please leave a thank you
Answer:
i guess it's the second one, 16x2+9y2, since they are both raised to 2 and they are binomial
