Ask questions and get helpful responses.
Ask a New Question
  1. Questions

algebra

A math class has 3 girls and 7 boys in the seventh grade and 2 girls and 2 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both boys?

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
Anneasha

  1. Prob(boy from 7th grade) = 7/10
    Prob(boy from 8th grade) = 2/4 = 1/2
    Prob(2 boys) = (7/10)(1/2) = 7/20

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    Reiny

  2. A math class has 3 girls and 5 boys in the seventh grade and 2 girls and 2 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both boys?

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    UnKnown

  4. A math class has girls and boys in the seventh grade and girls and boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both girls?
    Write your answer as a fraction in simplest form.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    claire

  5. answer yourself

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    Canyon

Respond to this Question

First Name

Your Response

Similar Questions

  1. mathematics

    there are 5 more girls than boys in a class. if 2 boys join the class, the ratio of girls to boys is 5:4. find the number of girls in the class.

  2. Mathematics

    There are 5 more girls than boys in a class. If 2 boys join the class, the ratio of girls to boys will be 5:4. Find (a) the number of girls in the class. (b) the total number of pupils in the class. (c) the probability of

  3. Maths

    In a class of boys and girls the mean weight of 8 boys is 55kg and the mean weight of a group of girls os 48kg the mean weight of all the children is 50.8kg how many girls are there

  4. Survey Math

    A survey of 240 10th grade students in a local High School found that there were 140 girls and 100 boys in the grade. Of the 140 girls, 100 preferred gym class while 40 preferred art class. Of the 100 boys, 40 preferred gym class

  1. Math

    If the ratio of girls to boys on the swim team is 2:3, which of these shows the possible number of girls to boys: A. 20 girls, 35 boys B. 24 girls, 36 boys

  2. math

    A science class has 3 girls and 3 boys in the seventh grade and 3 girls and 7 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability

  3. math

    The ratio of boys to girls in a class room was 9:8. Half of the girls left the classroom, and then there were 15 more boys than girls. A. How many children were in the classroom in the beginning B. How many girls left the

  4. English

    Which best describes society's view of boys’ and girls’ abilities during the period in which Elizabeth Cady Stanton lived? A. The abilities of boys are equal to those of girls. B.The abilities of boys are lesser than those of

  1. math

    In a class of 80 seniors, there are 3 boys for every 5 girls. In the junior class, there are 3 boys for every 2 girls. If the two classes combined have an equal number of boys and girls, how many students are in the junior class?

  2. math

    There are 120 student in class in which 20 of them are girls and rest boys.if the average marks in math of boys is 65% and that of girls is 80%. find the average marks of the class

  3. Math

    There were 352 children at a concert. After 2/5 of the girls and 1/2 of the boys left, there remained equal amounts of boys and girls. How many girls remain

  4. Math

    A science class has 3 girls and 7 boys in the seventh grade and 5 girls and 5 boysin the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability

Still need help? You can ask a new question.