Step-by-step explanation:
<h2>3(100)2 + 17(100) - 20</h2>
3(10000) + 1700 - 20
30000 + 1700 - 20
31680
You have to do 1= -4+x divided by 2 and then 5= 2+y divided by 2... this is how you find the missing coordinate since your given the other coordinate and the midpoint... I am learning the same thing in geometry right now ahah glad I can help