Answer:
3 - 4x - 32
Step-by-step explanation:
(3x+8)(x-4)
=3 -12x + 8x -32
=3 - 4x - 32
If c(x)=5/x-2 and d(x)=x+3, what is the domain of (cd)(x)?
1 answer:
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Answer:
90 g of water should be added and he will make 900 g of solution.
Step-by-step explanation:
Let x g be the amount of salt Ilya add to 810g of water to make 10% solution. Then 810+x g is the amount of new solution. Thus,
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x - 10%.
Mathematically,
So 90 g of water should be added and he will make 810+90=900 g of solution.