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youngnephew34

  • one year ago

What is the perimeter of triangle ABC with the vertices A(-2,9), B(7,-3),C(-2,-3) in the coordinate plan A)21 units B) 15 units C)34 units D)36 units PLZZZZZZZZZZ HELPPPPPPP MEDALS AND FAN

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  1. MrNood
    • one year ago
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    First sketch the triangle on a coordinate plane For example |dw:1439238776640:dw| and put the values of x & y for each point

  2. anonymous
    • one year ago
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    36

  3. MrNood
    • one year ago
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    I think she is wrong

  4. anonymous
    • one year ago
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    9-(-3)= 12 7-(-2)= 9 12x12= 144 9x9= 81 144+81= 225 square root of 225= 15 so 12+9+15= 36

  5. MrNood
    • one year ago
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    *actually I have no idea if she is correct - I just want the poster to work it out - he cannot trust someone giving a direct answer without explanation - so I sow the seed of doubt....

  6. youngnephew34
    • one year ago
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    thx guys

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