(+72) - (-18) =
H what do i do

90

Step-by-step explanation:

Positive 72 - (-18), is the same as 72 + 18, because two negatives cancel out and is the same as if you were adding. In other words, if you subtract a negative number, you are contradicting the negative, so you have one positive.

Hopefully that will help. :)

what's that

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.