What is the value of the expression -8+4-7+9+2 +(-5)

Giving 100 points asap bev has to cut her grandma's grass this weekend and wants to know exactly how much area she will be cutting. calculate the area of the polygon. be sure to show all your work and explain your answer.

1. what is the phythaforean theorem? 2.what do we use it for? 1.what is the distance formula ? 2.what do we use it for?

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined