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klasskru [66]
2 years ago
11

I REALLY NEED HELP PLS​

Mathematics
2 answers:
TEA [102]2 years ago
8 0

Answer:

Step-by-step explanation:

100+2x+40=180(sum of interior angle of a triangle)

140+2x=180

2x=180-140

2x=40

x=40/2

x=20

lorasvet [3.4K]2 years ago
8 0

Answer:

x=20

Step-by-step explanation:

the sum of the angles of a triangle is 180

so it means,

100+40+(2×)=180

140+(2×)=180

2×=180-140

2×=40

divide both sides by 2

x=20

to prove this substitute 20 inside see if the result is 180

40+100+(2×)=180

×=20

40+100+(2 (20))=180

140+40=180

140+40=180

Good luck.

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Lelechka [254]

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2 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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Aleonysh [2.5K]

Answer:

Ok soo.

Step-by-step explanation:

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_____________________________________________

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❉ Brainliest Would Be Appreciated❉

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