Algebra

Mallory had an average of 87 on her first three algebra quizzes. She made the same score on the first two quizzes and 9 points higher on the third quiz. What was her grade on each quiz?

  1. 👍
  2. 👎
  3. 👁
  1. mean = sum of scores/number of scores
    Let x = score on first two quizzes
    87 = (2x + x+9)/3

    Solve for x, then x+9.

    1. 👍
    2. 👎
  2. It worked, thanks!

    1. 👍
    2. 👎
  3. You are welcome.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Systematic

    In Marissa's calculus course attendance count for 15% of the grade quizzes count for 10% of the grade exams counts for 50% of the Grade and the final exam counts for 25% of the grade. Marissa have 100% average for attendance 93%

  2. MATH

    In Marissa's Calculus course, attendance counts for 5% of the grade, quizzes count for 15% of the grade, exams count for 60% of the grade, and the final exam counts for 20% of the grade. Marissa had 100% average for attendance,

  3. Math

    In​ Marissa's calculus​ course, attendance counts for 10​% of the​ grade, quizzes count for 20​% of the​ grade, exams count for 55​% of the​ grade, and the final exam counts for 15% of the grade. Marissa had a 100%

  4. Math

    Lesson 8: Volumes of Pyramids and Cones Essential Algebra Readiness (Pre-Algebra) B Unit 3: Measure Does anyone know the answers for this or can someone help me with it?

  1. statistics

    Can someone help me with this questions. Find the variance for a given data. Rpund your answer to one more decimal place then the original data. Compute the variance. Jeanne is currently taking college zoology. The instructor

  2. Stats, Statistics, Math

    A Statistics professor assigned 10 quizzes over the course of the semester. He wanted to see if there was a relationship between the total mark of all 10 quizzes and the final exam mark. There were 229 students who completed all

  3. Statistics

    In​ Marissa's calculus​ course, attendance counts for 20​% of the​ grade, quizzes count for 15​% of the​ grade, exams count for 45​% of the​ grade, and the final exam counts for 20​% of the grade. Marissa had a

  4. math

    . A student’s final grade in chemistry is determined by the following weights: Quizzes 5% Exam 1 20% Exam 2 20% Lab Reports 15% Research Paper 15% Final Exam 25% The student received the following grades: Lab reports: 75 80 70

  1. Math

    Algebra Readiness (Pre-Algebra) A Unit 5: Geometry THIS QUIZ WILL DETERMINE WERE I GO WHEN I GROW UP IF I DONT GET HELP I WILL BE A BUM ON THE STREETLesson 5: Polygons and Angles

  2. Mathematics

    Find the overall score for the student with the following weighted system and average scores. Round to the tenth. Weight Grade Tests 55% 78.5 Homework 25% 80 Take home quizzes 15% 72 Participation 5% 50

  3. math

    A student has passed 60 percent of the 20 quizzes he has written so far successfully. If the student writes 50 quizzes during the year, and passes 80 percent of the remaining quizzes successfully, what would his average percentile

  4. Math

    In college algebra a student earns an average grade of 86 on his homework and 75 on his quizzes. What final examination grade will give him a total average of 80 if homework 1/10 , quizzes 3/5 and the final examination 3/10?

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