SOLUTION: I have 7 quizzes each quiz is worth 100 points the average that I need is a 75 what is the lowest grade I can make on each quiz to get an average of 75 points ?

Question 924746: I have 7 quizzes each quiz is worth 100 points the average that I need is a 75 what is the lowest grade I can make on each quiz to get an average of 75 points ?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = sum of scores for 7 quizzes
x/7 = 75
x = 75*7
x = 525
---
525/100 = 5.25
---
answer:
there are many ways to average 75 over 7 quizzes, these are two ways:
1) get 100 on 5 quizzes, 25 on one quiz, and zero on another quiz.
2) get 75 on all 7 quizzes.
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Convert fractions, decimals, and percents:
https://sooeet.com/math/fraction-decimal-percent.php
---
Calculate and graph the linear regression of any data set:
https://sooeet.com/math/linear-regression.php
RELATED QUESTIONS
if my average is 92 on 3 last math quizzes what do I need to make on the 4th quiz to... (answered by stanbon)

Assume that to earn a B grade or higher in a college course you need at least an average... (answered by stanbon)

My question is about percentages: test 1 = 25% have 76% test 2 = 25% have 77%... (answered by nerdybill)

I really need your help here is my question You have made the scores of 81,76 and 82... (answered by bam878s)

Helping my son, 7th grade. We need help please. Q- average for five quizzes is 86.... (answered by richwmiller,josmiceli)

Helping my son, 7th grade. We need help please. Q- average for five quizzes is 86.... (answered by scott8148)

I have an 82 average in Math, and I just got a 78% on a quiz. If quizzes are 35% of my... (answered by ankor@dixie-net.com)

Here is the question: On four quizzes of 100 points each, BUrt has a mean quiz score of... (answered by ewatrrr)

I have a 94 on class grade worth 60% of my grade. Final is worth 40%.what is the lowest I (answered by ewatrrr)