Answer:
19
Step-by-step explanation:
180 - 123 = 57
57/3 = 19
hope this helps
Answer:
x= 6
Step-by-step explanation:

You will subtract 10x from 12x and get 2x

Subtract 4 from 16 to get 12

You will then divide both sides by 2
= 
x= 6
The second one is hard to read but since ∠3 is 54° you should just start from there
Hope this helps
Should be 40ft. If not, I dearly apologize.
Answer:
1/19
Step-by-step explanation: