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anonymous

  • one year ago

HELP WITH ACT MATH REVIEW QUESTION IMPORTANT: the depth of a pond is 180 cm and is being reduced by 1 cm per week. the depth of a second pond is 160 cm and is being reduced by 1/2 cm per week. If the depths of both ponds continue to be reduced at these constant rates, in about how many weeks will the ponds have the same depth?

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  1. anonymous
    • one year ago
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    @Vocaloid @mathstudent55 @Nnesha @BAdhi @mathmate @LexiLuvv2431 @lily1021 @RiOT @geny55 @emogirl100 @Elizabeth_46 @flatouthero @LegendaryNikki @Princessroniya

  2. anonymous
    • one year ago
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    Yo

  3. Vocaloid
    • one year ago
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    write equations for both ponds depths pond 1: d = 180-x pond 2: d= 160-(0.5x) where x = number of weeks and d = depth set them equal to each other and solve for x 180-x = 160-(0.5x)

  4. anonymous
    • one year ago
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    @Vocaloid why? if i don't no one helps me with my problem

  5. Vocaloid
    • one year ago
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    tagging = okay tagging a ton of people at a time = generally not ok

  6. anonymous
    • one year ago
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    but why? just curious

  7. Vocaloid
    • one year ago
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    everyone who gets tagged gets a bunch of notifications

  8. anonymous
    • one year ago
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    okay sorry

  9. Vocaloid
    • one year ago
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    anyway, back to the problem...

  10. anonymous
    • one year ago
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    also could you help me try to actually solve for x please?

  11. Vocaloid
    • one year ago
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    180-x = 160-(0.5x) start by adding x to both sides

  12. anonymous
    • one year ago
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    so would i get 180-.5x=160

  13. Vocaloid
    • one year ago
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    yes, keep going now subtract 180 from both sides

  14. anonymous
    • one year ago
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    I'm just wondering i thought i would add 180 plus 160

  15. Vocaloid
    • one year ago
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    nope, they're not on the same side of the equal sign so we subtract 180 - 0.5x = 160 subtract 180 from both sides, what do you get?

  16. anonymous
    • one year ago
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    -.5x=-20

  17. Vocaloid
    • one year ago
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    right, now we divide both sides by (-0.5)

  18. anonymous
    • one year ago
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    its 40! thank you so much for the help :-)

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