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# 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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- GeronimoLv 79 years agoFavorite 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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