First your going to find the square root 2b-4 then you will solve the problem as regular where you would subtract your b from the square root of 2b then you would add 4 to -2 then divide what you would get from there.
The answer would be either:
-99/10 or -9 9/10
52 Feet under sea level. 13 times 4 is 52, and since he is going underwater it is negative.
Where is the table how are u supposed to answer
With what in regard? For fractions, percentage is relative to the amount “full”. Think or a bottle of water, if it’s 50% full, it’s got 1/2 (50/100) filled with water. Simplifying is the process of taking a big fraction, say, 12/36, and finding the similarity to reduce it. 12 and 36 are both even, so let’s try to divide it by 2. 12/2 is 6, and 36/2 is 18. 6/18. However this is simplified it is not in simplest form, so we can divide It again. 6/2 is 3, and 18/2 9. 3/9 can be reduced by 3, making 1/3. 1/3 is the simplest form.