Find the distance between the pair of points.

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81