Pls help irs due today and im being timed. pls no links because i have a restricted school computer. bot will be reported, pls answers the 5 sceenshots i posted there.

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

Don't know how to find x given these segment lengths

∆red ≅ ∆ by rule will give brainiest if possible