Sally had 150 dollars to spend on 9 books. After buying them she had 15 dollars. How much did each book cost

Each book costs $15 dollars

Step-by-step explanation

150-15=135

135/9=15

$15

127459073968947726

step-by-step explanation:

your welcome : )

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.