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3 years ago

Please help this is the last question and i don’t understand

Mathematics

1 answer:

tiny-mole [99]3 years ago

5 0

Answer: 30

Step-by-step explanation:

The angles of triangles have to add up to 180°

So:

x + x + 70 + x + 20 = 180

Bring like terms together

x + x + x + 70 + 20 = 180

3x + 90 = 180

Subtract 90 from both sides

3x = 90

Divide both sides by 3

x = 30

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Answer:

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Step-by-step explanation:

We need to simplify

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Step-by-step explanation:

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