Finding an irrational number between which given pair of numbers supports the idea that irrational numbers are dense in real numbers?

Which graph represents the solution of the inequality?

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin