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Andreas93 [3]
3 years ago
9

What is the value of this expression when a=20

Mathematics
1 answer:
Aloiza [94]3 years ago
4 0

Answer:

20

Step-by-step explanation:

A=20

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Answer:

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Step-by-step explanation:

The angles of a quadrilateral add to 360

Let x be the smallest angle

x+55

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x+x+55 x+65+ x+120 = 360

Combine like terms

4x+240 = 360

Subtract 240 from each side

4x+240-240 = 360 -240

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Divide by 4

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x+65 = 30+65 = 95

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