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iwanttogotostanford

  • one year ago

PRACTICE ACT MATH Q NEED HEL URGENT: So far, a student has earned the following scores on four 100-point tests this grading period: 65, 73, 81, and 82. What score must the student earn on the fifth and lat 100-point test of the grading period to earn an average test grade of 80 for the 5 tests?

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  1. iwanttogotostanford
    • one year ago
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    @zepdrix @Nnesha @jim_thompson5910

  2. anonymous
    • one year ago
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    i got you

  3. anonymous
    • one year ago
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    so add up those scores and you get 301 right?

  4. anonymous
    • one year ago
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    so 301/4 is your average of 75.25

  5. iwanttogotostanford
    • one year ago
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    yes

  6. iwanttogotostanford
    • one year ago
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    i know the answer i just need to know the process

  7. anonymous
    • one year ago
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    then (301+x)/5 =80

  8. anonymous
    • one year ago
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    then solve for x

  9. anonymous
    • one year ago
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    cool?

  10. iwanttogotostanford
    • one year ago
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    how do I solve for X lol

  11. anonymous
    • one year ago
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    5*80 then subtract 301 to get 99

  12. iwanttogotostanford
    • one year ago
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    oh ok thanks!!

  13. anonymous
    • one year ago
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    no problem

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