m9597872moedledumy m9597872moedledumy

03-12-2021
Mathematics

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helppp mee plssss tqvm

helppp mee plssss tqvm class=

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mhanifa mhanifa

03-12-2021

Answer:

5 cm

Step-by-step explanation:

AB = DC as opposite sides of rectangle.
DE = AD as equal sides of isosceles triangle
DE + EC = DC segment addition postulate

Now substitute the values and find the length of EC:

EC = AB - AD
EC = 4p + 3 - (3p - 1)
EC = 4p + 3 - 3p + 1
EC = p + 4

Given p = 1

EC = 1 + 4 = 5 cm

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