Answer:
1. 3/4
2. -3/2
Step-by-step explanation:
Answer:
The technician can combine 10 liters of pure acid with 30 liters of 20% acid to get the desired concentration
Step-by-step explanation:
For pure acid, the concentration will be 100%
Let the liters of pure be a and the liters of 20% be b
Since we want 40 liters of total;
a + b = 40 ••••••••(i)
Also,
100% of a + 20% of b = 40% of 40
a + 0.2b = 16 •••••(ii)
From ii , a = 16-0.2b
Put this into i
16-0.2b + b = 40
0.8b = 40-16
0.8b = 24
b = 24/0.8
b = 30
Since a + b = 40
a = 40 - b
a = 40-30
a = 10
As an inequality it would be: -1 + 5 * 6 < 29
You just find the coordinate point. then, use your slope 2/3 (up 2, right 3) :)
EX: if your slope was negative, you’d do the same thing, but opposite -2/-3 (down 2, left 3)
hopefully this helps, good luck with math!! <3
(ps sorry if the drawing bothers you, but I wanted to show you as best as I could on how to solve your question :) )