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18-09-2020
Mathematics

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question: find the answer to BC

question find the answer to BC class=

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mhanifa mhanifa

18-09-2020

Answer:

11

Step-by-step explanation:

As per attached diagram:

AC = AB + BC

Given

AC = 18, BC = 6x + 5 and AB = 5x + 2

To find the value of BC, we need to find the value of x:

6x + 5 + 6x + 2 = 18
11x + 7 = 18
11x = 11
x = 1

Then

BC = 6*1 + 5 = 6+5 = 11

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