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anonymous

  • one year ago

The length of a rectangle is 5 mm longer than its width. Its perimeter is more than 30 mm. Let w equal the width of the rectangle.

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  1. skullpatrol
    • one year ago
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    any ideas?

  2. anonymous
    • one year ago
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    Well 2(x+5) + 2x = 30 ?

  3. skullpatrol
    • one year ago
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    yep

  4. skullpatrol
    • one year ago
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    solve it please

  5. anonymous
    • one year ago
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    Well would you first divide 30 by 2 ?

  6. skullpatrol
    • one year ago
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    sure

  7. anonymous
    • one year ago
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    2(5+5) + 2x5 = 30 Width = 5 since 5 would substitute for x

  8. skullpatrol
    • one year ago
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    w>5

  9. anonymous
    • one year ago
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    The part of the question that confuses me is when they say the perimeter is more than 30 mm are they looking for 30 mm as the perimeter or can it be more than that?

  10. skullpatrol
    • one year ago
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    Let P = perimeter, then the question asks for P > 30.

  11. anonymous
    • one year ago
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    W=10 and the length would be 15 since the length is 5 mm longer than the width W=10 L= 15

  12. skullpatrol
    • one year ago
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    They want all values of P such that P > 30 is a true statement. P > 30 29 > 30 False 30 > 30 False 31 > 30 True 32 > 30 True

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