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Vsevolod [243]
3 years ago
8

PLZ HELP 100 PTS!!!!!!!!!!!!!!!

Mathematics
2 answers:
Volgvan3 years ago
8 0

the correct answer is

<ABC = 80°



EastWind [94]3 years ago
4 0

Answer:

<ABC = 80°


Step-by-step explanation:

find x first

<ABC = 1/2[(9x - 7) +(5x + 13)]

8x - 8 = 1/2(9x - 7 + 5x + 13)

16x - 16 = 14x + 6

2x = 22

 x = 11

Plug in x = 11 into 8x - 8

<ABC = 8(11) - 8

<ABC = 88 - 8

<ABC = 80°

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8 0
3 years ago
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mr Goodwill [35]

Answer:

70

Step-by-step explanation:

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3 years ago
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Answer:

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8 0
2 years ago
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Murrr4er [49]

Answer:

70

Step-by-step explanation:

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The sum of the first 20 terms of the arithmetic sequence is 70.

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