Let x represent the number of liters of 50% acid Theresa puts into the mix. The the number of liters of 30% acid will be (420-x). The total amount of acid in the final solution will be ...
0.50x + 0.30(420-x) = 0.45(420)
0.20x + 126 = 189 . . . . . . . . . . . . . . . simplify
0.20x = 63 . . . . . . . . . . . . . . . . . . . . . subtract 126
x = 63/0.20 = 315 . . . . . . . . . . . . . . . liters of 50% solution
(420-x) = 420-315 = 105 . . . . . . . . . liters of 30% solution
Theresa should mix ...
105 liters of 30% solution
315 liters of 50% solution
Answer:
maybe c?
Step-by-step explanation:
you could try
Answer:
A
Step-by-step explanation:
Answer:
-44.9
Step-by-step explanation:
-8(2.2) = -17.6
3(-9.1) = -27.3
-17.6 + (-27.3) = -44.9
:)
True, the biggest factor will be 4 :)
