Those are supplementary angles, therefore:

Answer:
Im Guessing 320?
Step-by-step explanation:
Just a reasonable guess. Sorry if wrong.
Answer:
Because the first has () and the second doesn't so if u multiply the first one you will have to start with the () but if u answer the second u can start with anything
1 5/10 = 1.5 minutes
1 minutes is 60 seconds
1.5 * 60 = 90 second
90 seconds = 1 minutes and 30 seconds.