What are the center and radius of the circle with equation x2 + y2 - 4x - 6y +8 = 0

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's

Ibelieve the answer would be 7, 13, 23

There are 48 blue cards total

The additive identity is 0 because when you add 0 to a number, you get the identical number as an answer.a + 0 = a