The lengths of three sides of a trapezoid are shown below: side 1: 11z2 − 4z + 2 side 2: −2z + 3 + 12z2 side 3: 3 − 3z + 13z2 the perimeter of the trapezoid is 5z3 + 40z2 + 7z − 15. part a: what is the total length of sides 1, 2, and 3, of the trapezoid? part b: what is the length of the fourth side of the trapezoid? part c: do the answers for part a and part b show that the polynomials are closed under addition and subtraction? justify your answer. (3 points)

Part A: 11z^2 − 4z + 2 −2z + 3 + 12z^2-  3 − 3z + 13z2= (36z^2-9z+8)

Part B:  5z^3 + 40z^2 + 7z − 15-(36z^2-9z+8)

Part C: The answers show that the polynomials for Part A and B are closed under addition and subtraction. We can see that when we add both polynomials they result in a polynomial same applies to subtraction.

the correct answer is d. advanced technology has created a much more interconnected globe. hope this

ek = (m·v2) / 2

v - velocity of system after the collision

m = m1 + m2

ek = (m1 + m2) ·v2/2

ek = (200 + 250) ·2,32/2 = 450·5,29/2 = 1190,25 j