Five times a number is 21 less than twice the opposite of the number. what is the number

-3

Step-by-step explanation:

5 x = -2x -21

7x = -21

x = -3

By  opposite it means if the number is 5  the opposite is -5.

5n = -2n - 21

7n =-21

n = -3

(The number is -3 )

the answer is a

step-by-step explanation:

because your just changing the position of where the shape is

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.