Answer:
x = 8, y = 
Step-by-step explanation:

Both 8 and x sides are congruent so they're equal.
Add 64 + 64.
Square root 128

Final answers: x = 8, y = 
Answer:
<em>b = 5</em>
Step-by-step explanation:
Answer:
7.5 lb/cu ft
Step-by-step explanation:
75 lb / 10 cu ft = 7.5 lb/cu ft
3 lightest sharks
= 3 3/8 + 3 3/8 + 3 3/8
= 9 9/8
= 10 1/8