To find two numbers from the list whose sum is -18, let's first convert any mixed numbers and fractions to improper fractions or decimals to make the calculations easier:
- \( -22 \frac{1}{4} = -22.25 \)
- \( -23 \frac{1}{2} = -23.5 \)
- \( -24 \frac{3}{4} = -24.75 \)
- \( -22 \frac{1}{2} = -22.5 \)
Now the list looks like this:
- 4.5
- -22.25
- 5.5
- -23.5
- -24.75
- -22.5
- 6.75
- 4.25
Now, let's check combinations to find a pair that sums to -18.
- -22.25 + 4.5 = -17.75 (too high)
- -22.25 + 5.5 = -16.75 (too high)
- -22.25 + 6.75 = -15.5 (too high)
- -22.25 + 4.25 = -18 (this works!)
The two numbers that sum to -18 are -22.25 and 4.25.