Anonymous
Anonymous asked in Education & ReferenceHomework Help · 9 years ago

Math Homework Question?

A triangle has two sides A,B,C. If B is twice as long as A, and A is three units less than C, for what lengths of A is the perimeter of the Triangle no more than 30 units?

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  • 9 years ago
    Favorite Answer

    Sides are usually in lower case letters and the angles opposite the sides

    are labeled the same except in capital letters.

     b = 2a ... EQUATION 1

       a = c – 3

      a + 3 = c ... EQUATION 2

      Perimeter = a + b + c ≤ 30 ... substitute for "b" and "c" using EQ.1 & 2

        a + (2a) + (a + 3) ≤ 30

               4a ≤ 27

                a ≤ 6.75 units

  • 9 years ago

    b=2a

    a=c-3

    c=a+3

    a+b+c=(less than 30 units LOL)

    6+12+9=27 :D

    a equals to or is less than 6 (so yeah its gonna be a<6, but with the line at the bottom of the less than)

    ^_^

    Not too sure but i think im right :D

    Source(s): solved it :D
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