Which of the following is not involved in constructing a circle inscribed in a triangle? a- angle bisectors b- perpendicular bisectors c- incenter of a triangle d- center of a circle

Pls! does anybody know a shortcut for answering these types of questions in the future?

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)