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Ammarah

  • 3 years ago

Solve for x, given that AB =BC. Is triangle ABC equilateral?

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  1. Ammarah
    • 3 years ago
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    |dw:1358728672457:dw|

  2. Ammarah
    • 3 years ago
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    @karatechopper @campbell_st

  3. Ammarah
    • 3 years ago
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    @mathstudent55

  4. kirbykirby
    • 3 years ago
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    Equilateral means all 3 sides are equal. Since AB = BC, then 7 = x-1 x = 8 So, the side (x-1) = 8-1=7 Now, x-3 must equal the other sides to be equilateral. Now, since x = 8, then (x-3) = 8-3 = 5 So clearly 5 is not equal to 7, so the triangle is not equilateral. You can do this by inspection as well... since x represents the same number all the time, you see that (x-1) is not equal to (x-3) (because x is always the SAME number).

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