Answer:
the first one is 1/45
the second one is 45
Step-by-step explanation:
i hope this helped
Answer:
its A
Step-by-step explanation:
If its one of these signs(<>) then its open and if its one of the signs with the line under it then its closed
Answer:24 cards - 20%= 19.2
Step-by-step explanation:
Answer:
<h3> 26²/₃ liters of 15% acid and 13¹/₃ liters of 33% acid</h3>
Step-by-step explanation:
Concentration Amount of Amount
of Solution Solution (L) of Acid
15% x 0.15x
33% y 0.33y
21% 40 0.21•40
x + y = 40 ⇒ x = 40 - y
0.15x + 0.33y = 0.21•40
0.15(40 - y) + 0.33y = 0.21•40
6 - 0.15y + 0.33y = 8.4
0.18y = 2.4
y = 13¹/₃
x = 40 - 13¹/₃ = 26²/₃