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erma4kov [3.2K]
3 years ago
9

Please help me with this and pls don't answer if you don't know it.

Mathematics
1 answer:
Brrunno [24]3 years ago
4 0

Answer:

See below.

Step-by-step explanation:

The 3 marked angles add up to 360 degrees.

5x + 12 + 10x - 37 + 9x + 1 = 360

24x - 24 = 360

24x = 384

x = 384/24 =  16

The large angle at C = 10(16) - 37

= 160 - 37 = 123 degrees.

So m <BCA = 180 - 123

=  57  degrees    (adjacent angles add up to 180).

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