I would say he is incorrect because integers are both negative and positive
Answer:
dff
Step-by-step explanation:
saf
Answer:
I could be wrong, but I believe that the answer is D, none. This is because there is only proof of one congruent side and angle.
Step-by-step explanation:
Answer:
y = 0
Step-by-step explanation:
![- 7 + 21y + 23 = 16](https://tex.z-dn.net/?f=%20-%207%20%2B%2021y%20%2B%2023%20%3D%2016)
![- 7 + 23 =( 23 - 7) = 16](https://tex.z-dn.net/?f=%20-%207%20%2B%2023%20%3D%28%2023%20-%207%29%20%3D%2016)
![16 + 21y = 16](https://tex.z-dn.net/?f=16%20%2B%2021y%20%3D%2016)
![21y = 0](https://tex.z-dn.net/?f=21y%20%3D%200)
![y = 0 \div 21](https://tex.z-dn.net/?f=y%20%3D%200%20%5Cdiv%2021)
![\boxed{\green{y = 0}}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Cgreen%7By%20%3D%200%7D%7D)
90 ones would make 9 tens. It makes 9 tens because theres a 0 after 90. The 0 represents another place value. You can write this as 9 groups of ten