Which of the following gives an example of a set that is closed under multiplication? choose all that apply 15 pts a. the product of an even number and an even number b. the product of 0 and 0 c. the product of a negative number and a negative number d. the product of a perfect square and a perfect square

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.

the answer is 489

step-by-step explanation: