Please i need help fast! Which of the following sets of numbers could not represent the three sides of a triangle?

{7, 21, 28}

Step-by-step explanation:

In order for three sides to add up to a triangle, the two shorter sides must have a sum of greater than the longest side.

Since 7 + 21 = 28, and 28 = 28, that group of sides cannot add up to be a triangle.

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the image of (6, 9) under a dilation is (4, 6). the scale factor is

this shows a reflection over the x-axis and is translated one unit down and 6 units to the right (x + 6, y - 1)

hope this !

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