Which of the following statements correctly describes the chromosomes in each daughter cell.

Summarize the work of famous environmental scientists of the past.

Raul has one solution that is 20% acid by volume and one solution that is 50% acid by volume. he plans to mix together some of each solution to create 30 milliliters of a solution that is 40% acid by volume. how many milliliters of the 20% acid solution should raul use to create the 40% acid solution? can someone explain this to me? i know that the answer is 10 milliliters, but i don't know how to get it.

At the year's end, a share of ardex industries was worth $49.50. this was $9 less than three times its value at the beginning of the year. what was the price of one share of ardex stock at the beginning of the year?