Question

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

Answer 1

See below.

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).