Answer:
The m∠ U is 72°.
Step-by-step explanation:
Given:

To find :

Solution:
The sum of the measures of the interior angles of a polygon with 'n' sides is given as

Here we have n = 5 on substituting the values we get

Therefore,
m∠ U is 72°.
Answer:
P(not E)= 0.57
Step-by-step explanation:
P(not E)= 1-0.43
P(not E)= 0.57
Purple = 1/5 of the colors
5 colors per tray, 20 trays = 5 * 20 = 100 colors
1/5 * 100 = 100/5 = 20
20 colors are purple
20/100 = 1/5
1/5