Answer:
Enter it into Desmos!
Step-by-step explanation:
Answer:
Step-by-step explanation:
step by step butt
Answer:
28 l of 80%
42 l of 30%
Step-by-step explanation:
Target is 70 l of 50% solution
It will contain 70*0.5= 35 l of alcohol
x l of 80% solution and y l of 30% solution mixed to get the target solution
x+y=70 is the equation for total volume, and
0.8x+0.3y= 35 is the equation for the alcohol content. Solving this:
- y= 70-x
- 0.8x+0.3*(70-x) = 35
- 0.8x+21- 0.3x= 35
- 0.5x= 35-21
- 0.5 x= 14
- x= 14/0.5
- x=28 l of 80% solution
then
- y= 70-x= 70 -28 l= 42 l of 30% solution
Answer:
Option C, x - 2y = -16
Step-by-step explanation:
<u>Step 1: Find the slope
</u>
<u>Step 2: Plug in into point-slope form
</u>
<u>Step 3: Solve for x
</u>
<u>Step 3: Put the variables on one side
</u>
Answer: Option C, x - 2y = -16
