There are 15 plates in a kitchen cabinet. The diameter if each plate is ethier 7 inches or 12 inches. The diameter of all 15 plates combined is 140 inches Which number of equation can be used to find the number of 7 inch plates, x, and the number of 12 inch plate, y, that are in the cabinet

Answer: The equations that can be used to find the number of 7 inch plates, x, and the number of 12 inch plate, y, that are in the cabinet are

x + y = 15

7x + 12y = 140

Step-by-step explanation:

The diameter of each plate is either 7 inches or 12 inches.

Let x represent the number of 7 inches plate

Let y represent the number of 12 inches plate

There are 15 plates in the kitchen cabinet. This means that the sum of the 7 inches plate and the 12 inches plate is 15. It is expressed as

x + y = 15

The diameter of all 15 plates combined is 140 inches. This means that

7x + 12y = 140