Answer:
Here are Boolean expressions in Java syntax.
Step-by-step explanation:
For each part:
a) (x > y && y > z)
b) x == y && x < 0, or x < 0 && y < 0, or x == y && y < 0 (which is essentially the first example)
c) (x == y && x >= 0), or (x >= 0 && y >= 0), or (x == y && y >= 0) (for the first and third, once the first condition establishes that x is equal to y, if either x or y is greater than or equal to 0, then they are both not less than 0)
d) (x == y && x != z), or (x == y && y != z)