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2 years ago

Please help with all of question 4.

Mathematics

1 answer:

olga55 [171]2 years ago

6 0

Answer:

Step-by-step explanation:

Combine like terms: Like terms have same variable with same power and to combine the like terms, add/subtract the co efficient of the variables.

<h3>Perimeter:</h3>

Perimeter = sum of all sides

a) Perimeter of ΔABC = AB + BC + CA

= x + 14 + x + 14 + x + 14

= x + x + x + 14 + 14 + 14 {Combine like terms}

= 3x + 42

b) EF = DI - GH

= 2x + 3 - x

= 2x - x + 3

= x + 3

c) FG = HI - ED

= 12 + 2x - (x + 5)

= 12 + 2x - x - 5 {To open the brackets, (-1) is distributed to x and 5}

= 12 - 5 + 2x - x

= 7 + x

d) Perimeter of DEFGHI = DE + EF + FG + GH + HI + ID

= x + 5 + x + 3 + 7 +x + x + 12 +2x + 2x + 3

= x +x + x + x + 2x + 2x + 5 + 3 + 7 + 3 + 12

= 8x + 30

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Please help with all of question 4.​

Please help with all of question 4.