Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Help with these math problems?

*These are proportions problems..*

A map is drawn so that every 3.1 inches on the map corresponds to an actual distance of 100 miles. If the actual distance between the two cities is 400 miles, how far apart are they on the map?

A solution contains 72 milliliters of HCl and 104 milliliters of water. If another solution is to have the same concentration of HCl in water but is to contain 65 milliliters of water, how much HCl must it contain?

A basketball player makes 9 of 15 free throws in the first week of the season. If she shoots with the same accuracy for the next week, how many of the 10 free throws she attempts will she make?

1 Answer

Relevance
  • Anonymous
    7 years ago

    1) 3.1/100 = x/400, so 100x =1240, so x =12.4

    2) 72/104 = x/65, so 104x =4680, so x = 45

    3) 9/15 =x/10, so 15x =90, so x = 6

Still have questions? Get your answers by asking now.