Answer:
The answer is <em>x<-9</em>
Step-by-step explanation:
x+5<-4
You move it to the right and you change the sign
This is what I mean: x<-4-5
Then you Calculate the Difference
So it will be: <em>x<-9</em> which is your answer
Let x% be the salt concentration of first solution.
Then in 8ml, amount of salt = 
Given that to this 8ml solution, 11ml solution of a 47% salt solution is mixed.
amount of salt in 11ml of 47% salt solution is
= 
So, total amount of salt in new mixture = 
But given that this new solution is a 43% salt solution.
Hence amount of salt in new mixture of (8+11)=19ml solution of 43% salt solution is 
Hence 
8x+517 = 817
8x=817-517 = 300
x= 300/8 = 37.5
Hence the salt concentration in the first solution is 37.5%
Answer:
it is the second one
Step-by-step explanation:
Answer:
12 - x
Step-by-step explanation:
y = -x + 12
Replace x with y.
x = -y + 12
Solve for y, x = -y + 12
= 12 - x
Hope this helps, please mark brainliest if possible. :)
Answer:
-2/1
Step-by-step explanation: