Divide (2x^3-2x-1)/(x-2)
1 answer:
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Answer:
2400 people
Step-by-step explanation:
Let x be the number of people who had a swimming pool in the population of 10,000,
Thus, the ratio of people who had swimming pool to the total population =
Since, out of 250 people 60 had swimming pool,
So, the ratio of the people who had swimming pool to the total population =
Hence, 2400 people in the city might one expect to have a swimming pool.
First option is correct.
Let be the volume of 20% solution,
the volume of the 60% solution. We want a total volume of 400 mL in the final mixture, so
Each mL of either solution will contribute a corresponding concentration, and in the final mixture we want the 400 mL to have a 40% concentration, which means we should also have
Solve the system and we get .