Arc is 41 and angle is 40. I have no other given information but I have to find x

First of all I want to point out you drew the diagram a little wrong. The Arc is 41 doesn't mean its 41 degrees it means it has length 41 so remove the degrees symbol.

Now for the answer the other arc have to have angle 40 too because vertical angles. And because the radius is the same, both of the length has formula 40/360*pi*2*radius which is 41 in this case. So x has to be 41 also :) Done!

we need more info to solve this

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91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation: