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
  2. 👎 1
  3. 👁 1,645
asked by 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
    2. 👎 0
    posted by 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. 👍 0
    2. 👎 0
    posted by UnKnown

  3. 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. 👍 0
    2. 👎 0
    posted by claire

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 will be 5:4. Find the number of girls in the class.

    asked by Clinton on June 14, 2020

  2. 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

    asked by Tay on December 12, 2016

  3. Algebra

    A math class has 7 girls and 5 boys in the seventh grade and 4 girls and 4 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

    asked by Anesha on February 22, 2016

  4. Math

    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

    asked by MADISON on May 1, 2013

  5. 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

    asked by john on August 7, 2014

  1. Math

    A science class has 3 girls and 3 boys in the seventh grade and 4 girls and 1 boy 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

    asked by Brooke on February 14, 2016

  2. Maths

    There are 36 pupils in a class. Each girl is given 8 books and each boy is given 3 books. The total number of books the girls receive is 46 more than the total number of books the boys receive. How many girls are there in the

    asked by Max on October 17, 2012

  3. Math

    Mrs.Smith's class has 12 girls and 8 boys. What percent of he class are girls? [#boys/girls+boys]*100 = percent I didn't read the problem very carefully. The calculation above is percent boys. Percent girls is done similarly but

    asked by hALIDA on May 3, 2007

  4. maths

    There 168 students in a school. There are twice as many girls as there are boys. a) Calculate the number of girls in the school. b) the students are to be divided into seven classes so that each class has the same number of girls

    asked by indira on April 18, 2017

  5. math

    there are 15 boys and 18 girls in fifth grade. Find the ratio of boys to girls in fifth grade.(how do I get the answer) can someone show me how to work the problem

    asked by dan on October 1, 2012

You can view more similar questions or ask a new question.