Name 2 congruent angles that measure 15

Use sigma notation to represent the following series for 9 terms.

Abag contains 10 white golf balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio of white to striped gold balls to remain the same. how many of each should he add?

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart