Wattle is the cane that is woven between the upright posts. Daub is Georgia clay that is mixed with grass and water to form the walls of the house. red, green
green, brown
green, orange
green, red

answer; /// i believe that the correct answer is (d)the huang he river valley;

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69