tjuan142706 tjuan142706

12-05-2021
Mathematics

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Use the exterior angle theorem to find the value of x in the triangle below.

A
x = 7

B
x = 5

C
x = 12

D
x = 15

Use the exterior angle theorem to find the value of x in the triangle below A x 7 B x 5 C x 12 D x 15 class=

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thebecks thebecks

12-05-2021

Answer:

A) x = 7

Step-by-step explanation:

7x + 1 + 7x + 6 + (180 - 15x) = 180

combine like terms:

-x + 187 = 180

subtract 187 form both side of the equation:

-x = -7

x = 7

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