In the diagram below BC bisects

Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a