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Scrat [10]
3 years ago
6

In the diagram ACB = 65 BCD? 115 180 65 90

Mathematics
1 answer:
VMariaS [17]3 years ago
7 0

<ACB and <BCD are supplementary angles

Sum of supplementary angles = 180

Given <ACB = 65

<ACB + <BCD = 180

65 + <BCD = 180

<BCD = 180 - 65

<BCD = 115

Answer

<BCD = 115

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Step-by-step explanation:

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Substitution method:

Substitute y  value in equ (i)

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Move 4.2x to the other side

Sign changes from +4.2x to -4.2x

1.8-3.7x-4.2x= 4.2x-4.2x+0.3

1.8-3.7x-4.2x= 0.3

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