Answer please tysvm! (Give explanation too ty!)

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

Given abcd ac=38 and ae=3x+4 find the value of x

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.