Answer:
21 liters of the 12% solution and 4 liters of the 37% solution
Step-by-step explanation:
Represent the number of liters of the first solution as x and the second as y. Now, the total liters of iodine is going to be 16% of 25 = 4 liters of iodine, and the total liters of each solution is going to be 25. Now, we can setup two equations:
0.12x+0.37y = 4
x + y = 25
Multiplying the bottom equation by 0.12, we have
0.12x + 0.12y = 3
Subtracting, we have
0.12x+0.37y=4
-
0.12x + 0.12y = 3
= 0.25y = 1
= y = 4
= x = 25 - 4 = 21
Answer:

Step-by-step explanation:
This is for the first question.
Slope-intercept is:

m - slope
b - y-intercept
We are given the slope of
and a y-intercept of 2.
Plug in the values:

Hope this helps.
The answer is C because:
It is keeping it identity through the multiplication.
Answer:
3(3a+4)
Step-by-step explanation:
3(3a+4)
use distributive property
9a+12
Answer:
1. -2
2. add 25/4
3. sub 25/2
4. 5/2
Step-by-step explanation: