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03-01-2022
Mathematics

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how do I solve #7? do i add all the angles together like a normal triangle and make it equal to 180?

how do I solve 7 do i add all the angles together like a normal triangle and make it equal to 180 class=

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dt33183 dt33183

03-01-2022

Answer:

126 degrees

Step-by-step explanation:

Triangle: y = 180 - (5x + 4x)

Straight angle: y = 180 - (4x + 30)

180 - (5x + 4x) = 180 - (4x + 30)

5x + 4x = 4x + 30

5x = 30

x = 6

Angle:

y = 180 - (5x + 4x)

y = 180 - 9x

y = 180 - 9(6)

y = 126

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