The first ring is $50, the second ring is 37.50 and the third ring is 25.00
The total of the rings before tax is 112.50 and $121.50 after tax
Answer and Step-by-step explanation:



θ
pi r 



Answer:
x=5, y=8
Step-by-step explanation:
x+y=13
2x-y=2
add these two equations
3x=15
therefore x=5
apply this value in x+y=13
5+y=13
then y=13-5 = 8
True. If you're just changing the form, yes. But remember when you change one side of an equation, you must change the other in the same way.
Answer:
7 students.
Step-by-step explanation:
10% of 70 is 7.