Monday

January 26, 2015

January 26, 2015

Posted by **David** on Thursday, January 29, 2009 at 6:09pm.

- Math -
**Reiny**, Thursday, January 29, 2009 at 6:51pmlet the score that was dropped be x

total of all the marks on 9 quizzes = 86*9 = 774

then (774-x)/8 = 88

solve for x

(hope you get 70)

- Math -
**Damon**, Thursday, January 29, 2009 at 6:53pmsum/9 = 86

sum = 9*86 = 774

(sum - x)/8 = 88

sum - x = 704

774 - x = 704

x = 774 - 704

x = 70

**Answer this Question**

**Related Questions**

math - Tim wants his mean (average) quiz score in history class to be 90. His ...

math - STATISTICS The mean score for samantha's first s algebra quizzes was 88. ...

math - A teacher allows the students to each "throw out" their lowest test score...

Java programming - – One Dimensional Array Consider this example problem: You ...

Math - John has scores of 88,73,90,85,93 on five math quizzes. What scores must ...

statistics - If only the upper 30% of a normally distributed class passed a ...

algebra - Use the five steps for problem solving to answer the following ...

statistics - The scores on the final exam in a course have approximately a bell-...

algebra - each week, mandy's algebra teacher gives a 10 point math quiz. after 5...

math - A professor grades students on three tests, four quizzes, and a final ...