Please help quickly, will mark BRAINLIEST!
1 answer:
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Answer:
Yes, The slope of the line k between C and D is constant
Step-by-step explanation:
Lets find the slope of the line K from the points AC and AD
Step1:
Slope of line K from AC (point C)
=
=
Step 2:
Slope of line k from AD (point D)
=
=
=
The slope of the line K from the points AC and AD are equal
notice that all you do is simply multiply the terms of either one by the terms of the other sequentially, then add like-terms.
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%