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anonymous

  • 5 years ago

Perimeter of a rectangle. The width of a rectangle is three fourths of the length. The perimeter of the rectangle becomes 50 cm when the length and the width are each increased by 2 cm. Find the length and the width.

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  1. anonymous
    • 5 years ago
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    ?

  2. anonymous
    • 5 years ago
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    let x and y be length and width of the rectangel. y = 3/4 x when x and y are increased by 2cm perimeter becomes 50 cm 50= 2 ( (x+2) + ( 3/4x +2) ) 50 = 2 ( 7x/2 + 4) 50 = 7x + 8 7x = 42 x=6 length, width = 9/2 cm

  3. anonymous
    • 5 years ago
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    thanks :)

  4. radar
    • 5 years ago
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    Perimeter would equal 2L + 2W then P= 2*6 + 2*( 9/2) P=12+9=21 Shouldn't it be 50? What am I missing or is the solution wrong!

  5. anonymous
    • 5 years ago
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    no idea lol copied it exactly out of my online book

  6. anonymous
    • 5 years ago
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    hey radar could you try my other problem?

  7. anonymous
    • 5 years ago
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    hey guys, perimeter will be 50cm when existing length and width are increased by 2 cm each

  8. anonymous
    • 5 years ago
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    nagendra, could u look at my other one?

  9. anonymous
    • 5 years ago
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    I have to go to work soon and Im stumped

  10. anonymous
    • 5 years ago
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    where is the other one

  11. anonymous
    • 5 years ago
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    starts with womens records...

  12. anonymous
    • 5 years ago
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    8th one down

  13. anonymous
    • 5 years ago
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    i'm sorry i made a small error in the previous one 50 = 2( 7x/4 +4 ) 50 = 7x/2 +8 7x/2 = 42 x= 12, y = 9 please note the corrections

  14. anonymous
    • 5 years ago
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    ok thanks :) could you check the other one out?

  15. anonymous
    • 5 years ago
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    please copy it here

  16. anonymous
    • 5 years ago
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    Women’s records in the women’s 1500-m run. The formula R =−0.0026? + 4.0807 can be used to predict the world record, in minutes, for the 1500-m run t years after 1900. Determine (in terms of an inequality) those years for which the world record will be less than 3.8 min.

  17. anonymous
    • 5 years ago
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    i posted it in the original post, is it ? or t

  18. radar
    • 5 years ago
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    Thanks for info. It does check out now. I've been outside retrieving a boat that washed over the spillway. P=2(12+2)+2(9+2)=28+22=50

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