Answer:
8
Step-by-step explanation:
45 divided by 5 is 9 and what you do on the to you do on the bottom which means you would do 40 divided by 5 which you would get 8 as your answer.
Answer:

Step-by-step explanation:




Answer:sure!
Step-by-step explanation:
your answer is below
we have angles
7
8
9
and
10
so the complemantary is 90