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25-02-2021
Mathematics

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(9x – 9)
(3x + 9)°/B
Find the measure of ABC

9x 9 3x 9B Find the measure of ABC class=

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abidemiokin abidemiokin

02-03-2021

Answer:

<ABC = 54 degrees

Step-by-step explanation:

Taking the sum of angle on the straight line ABD as 180 degrees

3x+9 + 9x - 9 =180

12x = 180

x = 180/12

x = 15 degrees

Since <ABC = 3x+9 (vertically opposite angles)

<ABC = 3(15)+9

<ABC = 45+9

<ABC = 54 degrees

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