Which mathematical term cannot be precisely defined?

Tell me how you got the it use the figures to answer questions 1and 2. in each diagram, line k is parallel to line l, and line t intersects lines. 1. based on the diagrams, what is the value of x? 2. how would you verify your answer for x?

Is this a polynomial function? i need to know asap

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart