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Tom [10]
2 years ago
8

Work out the value of x.

Mathematics
2 answers:
Vinil7 [7]2 years ago
4 0

Answer:

\huge\boxed{x=20}

Useful Information:

Co-interior angles add to 180°

Step-by-step explanation:

The first step is to add 4x to 5x, which gives you 9x. This is because co-interior angles add up to 180, so 4x+5x=180. Co-interior angles can be spotted by their C shape.  

To work out the value of x you would need to divide 180 by 9, which gives you 20°.  This is because 9x is equal to 180. This means that x is equal to 180 divided by 9.

1) Add 4x to 5x.

4x+5x=9x

2) Divide 180 by 9.

\frac{180}{9}=20

xeze [42]2 years ago
3 0

Answer:

x = 20

Step-by-step explanation:

4x+5x = 180° (sum of int angles)

     9x = 180°

       x = 20°

Hence, x = 20.

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