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S_A_V [24]
3 years ago
11

Can someone help with this please?

Mathematics
1 answer:
polet [3.4K]3 years ago
3 0

Answer:

<4 = 81

Step-by-step explanation:

we know that all the interior angles of a triangle will equal 180

so <1 + <2 + <3 = 180

we know that <4 is the exterior angle to <3

the exterior angle is equal to the angles opposite to its interior

<3 is the interior angle to <4

<1 and <2 are the angles opposite to <3

so <4 = <1 + <2

<4 = 42 + 39

<4 = 81

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11.5x+22 equal to -13x+218
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Now you have an equation. Solve for x:
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