To determine whether the sides of lengths 4 inches, 8 inches, and 9 inches can form a triangle, we can apply the Triangle Inequality Theorem, which states that for any triangle with sides of lengths \( a \), \( b \), and \( c \), the following inequalities must hold:
- \( a + b > c \)
- \( a + c > b \)
- \( b + c > a \)
Let's denote the sides as \( a = 4 \), \( b = 8 \), and \( c = 9 \). Now we will check each condition:
- \( 4 + 8 > 9 \) → \( 12 > 9 \) (True)
- \( 4 + 9 > 8 \) → \( 13 > 8 \) (True)
- \( 8 + 9 > 4 \) → \( 17 > 4 \) (True)
Since all three conditions are met, the sides do form a triangle.
So the correct response is: Yes, all of the conditions are met.