Final answer:
To find out how many green balls equal 1 yellow triangle, we need to compare their weights. If the scales are balanced, the number of green balls is equal to the reciprocal of the number of yellow triangles. Therefore, the answer is 4 green balls.
Step-by-step explanation:
In order to find out how many green balls equal 1 yellow triangle, we need to compare the weights of the two objects. If the scales are balanced, it means that the weights are equal. Let's say that x is the number of green balls that equal 1 yellow triangle. So, the equation would be:
x green balls = 1 yellow triangle
To balance the equation, we can divide both sides by x. This gives us:
1 green ball = 1/x yellow triangles
From this equation, we can see that the number of yellow triangles is the reciprocal of the number of green balls. So, if we have 4 green balls, then 1 yellow triangle would be equal to 1/4 or 0.25 green balls. Therefore, the answer is:
C) 4 green balls