One number is nine less than a second number. Three times the first is 12 more than 4 times the second. Find the numbers. The value of the first number is

Step-by-step explanation:

Let the first number be x

Let the second number be y

x = y - 9

3x = 4y + 12

3x - 4y = 12

3(y - 9) - 4y = 12

3y -4y - 27 = 12

-y = 12 + 27

-y = 39

y = -39

x = y - 9

x = -39 - 9 = -48

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.

9987

step-by-step explanation: