a researcher needs 30ml of 20% acid solution for a certain experiment but he has only 15% solution and 40% solution. how many milliliters of the 15% and the 40% solutions should he mix to get what he needs?​

i have heard the mermaids singing, each to each.

i do not think they will sing to me

awnser:

over the two days of the convention, presided over by lucretia’s husband james mott, the declaration of sentiments was read and its resolutions debated. the ninth resolution continued to be the most controversial, particularly because the attendees were predominantly quaker, and quaker men often declined to vote. freed slave and newspaper editor frederick douglass argued for approval of the resolution and convinced the audience of its necessity. at the end of the convention, about 100 of the attendees signed the declaration, although some removed their names later due to criticism.