Algebra

The incomplete table below summarizes the number of left-handed students and right-handed students by gender for the eighth grade students at Keisel Middle School. There are 6 times as many right-handed female students as there are left-handed female students, and there are 8 times as many right-handed male students as there are left-handed male students. if there is a total of 18 left-handed students and 130 right-handed students in the school, which of the following is closest to the probability that a right-handed student selected at random is female? (Note: Assume that none of the eighth-grade students are both right-handed and left-handed.)

A) 0.857
B) 0.878
C) 0.331
D) 0.323
(Table is just total number of left handed females + males =18 and total number of right handed females + males=130)

  1. 3
asked by Delila
  1. let m be the number of left-handed males , and f be the number of left-handed females

    m + f = 18 ... 8m + 8f = 144

    8m + 6f = 130

    subtracting (to eliminate m) ... 2f = 14

    find number of right-handed females

    find fraction of right-handed students that are female

    posted by scott

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    Left hand! right hand Female___!________ Male_____!_______ Total-18 ! 122 The incomplete table above summarizes the number of left-handed students and right-handed students by gender for the eighth grade students at Keisel Middle
  2. Math

    For every left handed person, there are 4 right handed persons. If there are 30 students in the class predict the number of students who are right handed.
  3. Statistics

    Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students
  4. Stats

    Suppose that you are in a class of 31 students and it is assumed that approximately 10% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students
  5. STATISTICS

    Suppose that you are in a class of 29 students and it is assumed that approximately 16% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students
  6. math check

    Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students
  7. Math check answer

    Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students
  8. Math statistics

    Ten percent of Americans adults are left-handed. A statistics class has 50 students in attendance. Find the standard deviation for the number of left-handed students in such classes of 50 students
  9. algebra 1

    the ratio of right handed to left handed students in the school was 3 to 14. if the total number in both categories was 714 how many right handed students were in the school? please help its due tomorrow! i totally forgot about
  10. 5th grade math

    In the fourth grade class at Baker Elementary, 9 students are left-handed. The fifth grade has 7 left-handed students and the sixth grade has 6. The number of students in the fourth grade is 3 times the number of left-handed

More Similar Questions