<u>Answer:</u>
<u>Step-by-step explanation:</u>
- 10 + 4.5m = 21.25
- => 4.5m = 21.25 - 10
- => 4.5m = 11.25
- => m = 11.25/4.5
- => m = 2.5
<u>Conclusion:</u>
Therefore, m = 2.5
Hoped this helped.

The top one, hope this is right :)
Answer:
Yes
Step-by-step explanation:
25+144=169
the frame forms perpendicular lines meaning they are 90 degrees
80
Step-by-step explanation:
5×6 = 30 and 30×8 = 240 divide that by three you get 80