Answer:
17. 15
18. 8(this one I'm not sure tho what does the right one say)
19. 32
20. 5
Answer: 
Step-by-step explanation:
<u>Given equation</u>

<u>Subtract 9 on both sides</u>


<u>Conclusion</u>


Hope this helps!! :)
Please let me know if you have any questions
Answer:
AB = 2.18 units
Step-by-step explanation:
