Answer:
x = 5, y = 5
Step-by-step explanation:

Answer:9 cm by 9cm
Step-by-step explanation: 3*3=9
Answer:
It is 2πrh + 2π
Step-by-step explanation:
When the two angles add to 180 grades, we say they "supplement" each other.
(7,3) because if you plug the 7 in for x and 3 in for y in both equations you get the right answer