Consider the sets below.

a {x|x is a polygon}
b {x|x is a triangle}

which is true?

a ⊂ b
b ⊂ a
ac = b
bc = a

The correct answer is option B. i.e. B is a subset of A. Given the set A is {x|x is a polygon} and the set B is {x|x is a triangle}. Then the set B is a subset of set A, because a triangle is a polygon and all triangles are included in the set of polygons.

B ⊂ A 

A triangle is a 3-sided polygon.

The answer is 6 weeks

Answer:

$4034.40

step-by-step explanation:

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