Answer:
![scalene](https://tex.z-dn.net/?f=scalene)
Step-by-step explanation:
![\textsf{Sum of internal angles;}](https://tex.z-dn.net/?f=%5Ctextsf%7BSum%20of%20internal%20angles%3B%7D)
![71+50+6x-1=180](https://tex.z-dn.net/?f=71%2B50%2B6x-1%3D180)
![6x-1=180-71-50](https://tex.z-dn.net/?f=6x-1%3D180-71-50)
![6x-1=59](https://tex.z-dn.net/?f=6x-1%3D59)
Answer:
The answer is c.
Step-by-step explanation:
so yeah.
So you want to add 18500+9%=20,165 and then divide 20165 by 48 and you get 420.10
8.6E-10 is 8.6 x 10^-10 in standard form. As 'E' represents '10^'
Hope it helped!