The expression “8 9” can be interpreted as a mixed number, which means it’s composed of a whole number and a fraction. In this case, you have 8 as the whole number and 9 as the fraction over 1, making it equivalent to 8 + 9/1.
Since 9/1 is equal to 9, you can sum these to get:
8 + 9 = 17
Next, if you’re looking to express this as a decimal, the whole number part (17) remains the same as a decimal:
17.0
Thus, the answer is 17.0 as a decimal.