Answer:
3
Step-by-step explanation:
Firstly we are looking for two variables x,y so that we need two formulas .
the second formula is missing
The answer is 16.5. because of the 2 after the 5, you keep it the same
When solving this equation, you get the answer as -43.5.
To solve, we simply need to collect like-terms and then rearrange to get x on one side and numbers on the other:
(8x - 20) - 16 = 10x + 51
8x - 36 = 10x + 51
- 8x
-36 = 2x + 51
- 51
-87 = 2x
÷ 2
-43.5 = x
I hope this helps!
Answer:
(3,-4) and (-3,4)
Step-by-step explanation:


The first equation is a circle with radius of 5 units
The second equation is a line which has slope 
So, for 4 unit change in y there will be 3 unit chang in x.
The circle has its center at the origin and the line passes through the orgin.
The line will intersect the circle at two points giving us two solutions
From the second equation we get

Applying in the second equation

When x = 3

When x = -3

So, the points where the line and circle intersect are (3,-4) and (-3,4)