Marcie wants to enclose her yard with a fence. her yard is in the shape of a rectangle attached to a triangle. the formula for the area of the enclosed space is a = lw + 0.5bh. given the formula, find the value of b. a. b = a divided by the quantity l times w plus 0.5 times h b. b = the quantity a minus l times w all divided by 0.5 times h c. b = a – lw – 0.5h. d. b = a + lw + 0.5h

A = lw + 0.5bh
0.5bh = A - lw
b = (A - lw)/0.5h

option B is the correct option.

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm