If ax^2- bx = ay^2 + by, then
a/b=

a/b=1/(x-y)

Step-by-step explanation:

cause ax^2-bx=ay^2+by

so ax^2-ay^2=bx+by

a(x^2-y^2)=b(x+y)

a(x+y)(x-y)=b(x+y)

a(x-y)=b

so a/b=1/(x-y)

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40