Answer:

Step-by-step explanation:
Given
, start by squaring both sides to work towards isolating
:

Recall
and
:

Isolate the radical:

Square both sides:

Expand using FOIL and
:

Move everything to one side to get a quadratic:

Solving using the quadratic formula:
A quadratic in
has real solutions
. In
, assign values:

Solving yields:

Only
works when plugged in the original equation. Therefore,
is extraneous and the only solution is 
We require a picture of said spinner to see which sides say a and which say b
Answer:
-250
Step-by-step explanation:
I don't know for sure but I hope it's correct.
Answer:
mee
Step-by-step explanation:
No it is an irrational number because it is a decimal with repeating numbers.