Answer:
A Exactly one solution
Step-by-step explanation:

Putting y=0 at second equation, we have

The unique solution is 
Answer:
PQT and TQS
Step-by-step explanation:
they must supplement each other to get the 90
1. 100 times larger than
2. 1/10
3. 1,000 times larger than
4. 1,000 times larger than
5. 1/100
6. 1/10
7. 1/10
There are 5 sides/angles in a pentagon. Formula (n-2)180 so (5-2)180 which is (3)180=540. In a regular Pentagon there is an area of 540°