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anonymous

  • one year ago

Triangle ABC is congruent to triangle DEF. In triangle ABC, side AB measures 4, side BC measures x+8, and side CA measures 8. In triangle DEF, side DE measures 4, side EF measures 3x+3, and side FD measures 8. What equation would help you to solve for the side length of BC and EF? Explain your reasoning using complete sentences.

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  1. anonymous
    • one year ago
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    @ganeshie8

  2. anonymous
    • one year ago
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    @wolf1728 plz help

  3. welshfella
    • one year ago
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    side BC is congruent to side EF so x + 8 = 3x + 3

  4. welshfella
    • one year ago
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    solve this equation for x then you you can calculate the length of the sides BC and EF

  5. anonymous
    • one year ago
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    @welshfella can u help me??

  6. anonymous
    • one year ago
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    @welshfella I got 5/2 is that correct

  7. welshfella
    • one year ago
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    x + 8 = 3x + 3 subtract x from both sides 8 = 2x + 3 add 3 to both sides 11 = 2x divide both sides by 2 x = 5.5

  8. welshfella
    • one year ago
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    oops i made an error.. 8 = 2x + 3 subtract 3 from both sides 5 = 2x x = 2.5

  9. welshfella
    • one year ago
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    or 5/2 thats the value of x now you have to plug this into x + 8 to find the length of BC and EF.

  10. welshfella
    • one year ago
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    BC = 2.5 + 8

  11. welshfella
    • one year ago
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    ok?

  12. anonymous
    • one year ago
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    ok thank you very much (:

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