3 years ago

Can someone please help me ASAP

Mathematics

2 answers:

laiz [17]3 years ago

7 0

Answer:

42 degrees

Step-by-step explanation:

Strike441 [17]3 years ago

7 0

Answer:

x=42°

Step-by-step explanation:

In any triangle, when all three angles are added together, their sum will always be 180°:

∠1+∠2+∠3=180

Insert any known values:

$29+109+x=180$

Simplify the addition:

$138+x=180$

Use inverse operations to find angle three. Subtract 138 from both sides:

$138-138+x=180-138\\\\x=42$

Therefore, the unknown angle is 42°.

:Done

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