Question

Plz help me alomst done but got stuck on these 3

Answer 1

Answer:

12. 160°

13. 156°

14. 40°

Step-by-step explanation:

12.

$WVU= YVU + WVY \\ 14x + 12 = 13x + 4 + 20 \\ \\ 14x - 13x = 4 + 20 - 12 \\ x = 24 - 12 \\ x = 12 \\ YVU = 13x + 4 \\ = 13 \times 12 + 4 \\ 156 + 4 \\ 160$

13.

$UVW= UVJ +JVW \\ 176 = x + 32 + x + 164 \\ 176 - 32 - 164 = 2x \\ 176 - 192 = 2x \\ - 16 = 2x \\ x = - 8 \\ JVW = x + 164 \\ = - 8 + 164 \\ = 156$

14.

$BCD= ECD + BCE \\ 103 = 6x - 2 + 9x \\ 103 + 2 = 15x \\ 105 = 15x \\ x = 105 \div 15 \\ x = 7 \\ ECD = 6x - 2 \\ = 6 \times 7 - 2 \\ 42 - 2 \\ 40$