You would use the function root(Xsub2-Xsub1)^2+(Ysub2-Ysub1)^2.
Now plug in your numbers.
This gives you root(7-1)^2+(5-(-3))^2.
Simplify to root(6)^2+(8)^2. Simplify again to root36+64.
Simplify one more time to root 100. now solve.
Your answer is 10.
20 + 8x = 32
- 20
8x = 12
-- --
8 8
x = 3/2= 1 1/2
Answer:. 7
Step-by-step explanation: