HelloKitty17
  • HelloKitty17
FAN AND MEADL!!!!!!!!!!!!!!!!!!!!!!
Mathematics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
HelloKitty17
  • HelloKitty17
The lengths of two sides of a triangle are shown below: Side 1: 5x2 + 2x - 3 Side 2: 8x - 3x2 + 2 The perimeter of the triangle is 2x3 - 5x2 + 4x - 8. Part A: What is the total length of the two sides, 1 and 2, of the triangle? (4 points) Part B: What is the length of the third side of the triangle? (4 points) Part C: Do the answers for Part A and Part B show that the polynomials are closed under addition and subtraction? Justify your answer. (2 points)
misssunshinexxoxo
  • misssunshinexxoxo
Perimeter of a triangle (P) = A + B + C A = 5x2 + 2x - 3 B = 8x - 3x2 + 2 C = ? P = 2x3 - 5x2 + 4x - 8
misssunshinexxoxo
  • misssunshinexxoxo
Do you understand? @HelloKitty17

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More answers

HelloKitty17
  • HelloKitty17
sort off
misssunshinexxoxo
  • misssunshinexxoxo
Part C 2x3 - 7x2 -6x - 7
misssunshinexxoxo
  • misssunshinexxoxo
demonstrated by the fact when you combine the side 1, side 2 and the result of side 3 you get the given perimeter
OregonDuck
  • OregonDuck
DO NOT LISTEN TO @misssunshinexxoxo she is copying off google
OregonDuck
  • OregonDuck
misssunshinexxoxo
  • misssunshinexxoxo
Not true; I setup the equation
misssunshinexxoxo
  • misssunshinexxoxo
Yes the last part recited it
OregonDuck
  • OregonDuck
i see you on that quaetion you copy cat
OregonDuck
  • OregonDuck
question
OregonDuck
  • OregonDuck
UN MEDAL HER EVERYONE IT IS NOT HER OWN WORDS SHE DOES NOT DESERVE IT
OregonDuck
  • OregonDuck
now she left the question
misssunshinexxoxo
  • misssunshinexxoxo
I'm still here
OregonDuck
  • OregonDuck
no the question you copied
misssunshinexxoxo
  • misssunshinexxoxo
I verified the answer and double checked it
OregonDuck
  • OregonDuck
Part A is 7x^2 + 2x +1
misssunshinexxoxo
  • misssunshinexxoxo
Please stop the harassment
OregonDuck
  • OregonDuck
Part B is 4x^3 -10x^2 - 7
misssunshinexxoxo
  • misssunshinexxoxo
Wrong it is 5x^2 + 2x - 3
misssunshinexxoxo
  • misssunshinexxoxo
8x - 3x^2 + 2
OregonDuck
  • OregonDuck
how do you know you are just copying and you have no title
misssunshinexxoxo
  • misssunshinexxoxo
Sir that isn't my source; double check what I wrote
misssunshinexxoxo
  • misssunshinexxoxo
Before you go "accusing" make sure your statements are valid and stop spamming a question
OregonDuck
  • OregonDuck
@HelloKitty17 i deseve the medal because i am actually working the problem out
OregonDuck
  • OregonDuck
actually you are spamming it
misssunshinexxoxo
  • misssunshinexxoxo
Not at all, sir; you are invalidating by harrassment
HelloKitty17
  • HelloKitty17
GUYS STOP AND JUST HELP GET THE RIGHT ANWERS!!!!!!
OregonDuck
  • OregonDuck
HOW ON EARTH AM I HARASSING YOU CAN SOMEONE EXPLIAN THAT TO ME
OregonDuck
  • OregonDuck
@misssunshinexxoxo what grade are you in?
misssunshinexxoxo
  • misssunshinexxoxo
University leveled and 12th grade, sir
OregonDuck
  • OregonDuck
well i am 11th grade level and i am in 6th grade
misssunshinexxoxo
  • misssunshinexxoxo
Make no sense at all
OregonDuck
  • OregonDuck
Part A Total length = Side 1 + Side 2 = 8x^2 - 5x - 2 + 7x - x^2 + 3 = 7x^2 + 2x + 1 answer// Part B perimeter = a + b + c 4x^3 - 3x^2 + 2x - 6. = 8x^2 - 5x - 2 + 7x - x^2 + 3 + C 4x^3 - 3x^2 + 2x - 6 = 7x^2 + 2x +1 + C 4x^3 - 3x^2 - 7x^2 + 2x - 2x - 1 - 6 = C C = 4x^3 - 10x^2 - 7 answer// C justifyed in part a and b
misssunshinexxoxo
  • misssunshinexxoxo
Help @HelloKitty17 the way you know; my answers are valid and not fron a third party source.
misssunshinexxoxo
  • misssunshinexxoxo
Incorrect, sir
OregonDuck
  • OregonDuck
Side 1 = 8x² - 5x - 2 Side 2 = 7x - x² + 3 Perimeter, P = 4x³ - 3x² + 2x - 6 A. ) Length, L = Side 1 + Side 2 Subbing known values, L = 8x² - 5x - 2 + 7x - x² + 3 L = 8x² - x² - 5x + 7x - 2 + 3 L = 7x² + 2x + 1 Total Length of Two Sides = 7x² + 2x + 1 ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ B.) Third Side, S = P - Side 1 - Side 2 Subbing, S = 4x³ - 3x² + 2x - 6 - (8x² - 5x - 2) - (7x - x² + 3) S = 4x³ - 3x² + 2x - 6 - 8x² + 5x + 2 - 7x + x² - 3 S = 4x³ - 3x² - 8x² + x² + 2x + 5x - 7x - 6 + 2 - 3 S = 4x³ - 10x² - 7 Third Side = 4x³ - 10x² - 7 ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ C.) Adding or subtracting the polynomials yields polynomials so they are closed under addition and subtraction.

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