What is the value of a? 5 units 5 and one-third units 6 and two-thirds units 7 units

How do i find the missing angle measure in a polygon

Divide reduce the answer to lowest term 3/7 divided 1 1/6

Talia grouped the terms and factored out the gcf of the groups of the polynomial 15x2 – 3x – 20x + 4. her work is shown below. (15x2 – 3x) + (–20x + 4) 3x(5x – 1) + 4(–5x + 1) talia noticed that she does not have a common factor. what should she do?