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Annetta_Martin

  • one year ago

With a tail wind, a plane traveled 800 mi in 5 hours. With a head wind, the plane traveled the same distance in 8 hours. Which system of equations could be used to solve this problem? (s + w)5 = 800 and (s - w)8 = 800 (s - w)5 = 800 and (s + w )8 = 800 5s + 8w = 800 and 5s - 8w = 800

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  1. Peter14
    • one year ago
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    which one do you think it is?

  2. Annetta_Martin
    • one year ago
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    The first one, I'm sure!

  3. Annetta_Martin
    • one year ago
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    Please tell me I'm right haha

  4. Peter14
    • one year ago
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    you are right :)

  5. Peter14
    • one year ago
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    any other problems?

  6. Annetta_Martin
    • one year ago
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    Yes I just have two more questions to finish my online study guide....

  7. Annetta_Martin
    • one year ago
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  8. Annetta_Martin
    • one year ago
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    @bahrom7893 @ganeshie8 @mathstudent55 @AriPotta

  9. ganeshie8
    • one year ago
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    for the first 1, whats the coordinate where the blue and green lines intersect ?

  10. Annetta_Martin
    • one year ago
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    2, -1

  11. ganeshie8
    • one year ago
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    thats right !

  12. Annetta_Martin
    • one year ago
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    Yay! Ok :)

  13. ganeshie8
    • one year ago
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    second q : do u knw how coordinates of points of line y=x look like ?

  14. ganeshie8
    • one year ago
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    (0, 0), (1, 1), (2, 2), (3, 3), (4, 4), (5, 5),..... right ?

  15. Annetta_Martin
    • one year ago
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    Yes

  16. ganeshie8
    • one year ago
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    do u see any such point in the given line ?

  17. ganeshie8
    • one year ago
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    or easy way is to look at given options !

  18. Annetta_Martin
    • one year ago
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    4,4 right?

  19. ganeshie8
    • one year ago
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    right !, and u can confirm it in the graph also. if u see, the line is actually going thru (4,4)

  20. Annetta_Martin
    • one year ago
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    Thank you soo much! You're awesome for explaining everything :D

  21. ganeshie8
    • one year ago
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    np.. yw !

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