algebra 2

-2(3y-6)+4(5y-8)=92
-6y+12+20y-32=92
-6y -6y
__________________
12+14y-32=92
-12 -12
_______________
14y-44=92
+44 +44
_______________
14y=136=9.7

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asked by reina
  1. 5g+18g-7g+4g=8
    2g+18=8
    -18 -18
    2g=-10
    =-5

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    posted by reina
  2. roberts father is 5 years older than 3 times roberts age let robert age be denoted by r and let roberts father age be denoted by F write an equation that relates roberts age and his fathers age?

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    posted by reina
  3. the citation sovereign is a small jet that can carry up to 2650 pounds. the number of passengers p and the number of suitcases c that the airplane can carry are estimated by the equation 180p+60c=2650. if 10 people board the aircraft how many suitcases can the airplane carry?



    180p+60c=2650
    1800+60c=2650
    -1800 -1800
    60c=850
    =14.16

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    posted by reina
  4. This is how I would have expected my students to do this
    -2(3y-6)+4(5y-8)=92
    -6y + 12 + 20y - 32 = 92
    14y - 20 = 92
    14y = 92 + 20
    14y = 112
    y = 112/14
    y = 8


    F = 3r+5
    (just a translation of the English to Math)

    for you last problem isn't p = 10 ?
    So plug it in and solve the equation
    180(10) + 60c = 2650
    etc

    5g+18g-7g+4g=8
    20g = 8
    g = 8/20
    g = 2/5

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    posted by Reiny
  5. im sorry

    5g+18-7g+4g=8

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    posted by reina
  6. i wrote it wrong

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    posted by reina
  7. and
    180(10) + 60c = 2650

    yea i did

    and that got me
    1800+60c=2650
    -1800 -1800
    60c=850
    =14.16

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    posted by reina

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