Which of the following represents the sum 4+8? Assume that red tiles represent negative numbers and blue tiles represent positive numbers. four blue tiles plus eight blue tiles four blue tiles plus eight red tiles four red tiles plus eight red tiles four red tiles plus eight blue tiles

100 three negative numbers added together.

Step-by-step explanation:

77

step-by-step explanation:

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6