Answer:
8. a = 30
9. a = 3.46
General Formula:
a = square root c^2 - b^2
the answer for the first part is 260
the equation is n+8
Step-by-step explanation:
all you need to do is take the starting number witch is 13 then you add 8 and then take that number and add 8 so thats why the equation is n+8 n equaling the starting number and 8 equaling to the reoccurring number.
5.6 - (-8.6)
Answer: HI = √97
