The lengths of three sides of a quadrilateral are shown below:
Side 1: 1y^2+ 3y - 6
Side 2: 4y - 7 + 2y^2
SIde 3: 3y^2 - 8 + 5y
The perlmeter of the quadrilateral is 8y3 - 2y2 + 4y - 26.

Part A: What Is the total
length of sides 1, 2, and 3 of the quadrilateral?
Part B: What is the length of the fourth side of the quadrillateral?
Part C: Do the answers for Part A and Part B show that the polynomials are closed under addition
and subtraction? Justify your answer.

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

step-by-step explanation:

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)