As a function this is x=3 y=3
Answer:

or 10.39 rounded
Step-by-step explanation:
a²+b² =c²
6²+b²= 12²
36+b² = 144
-36 -36
b² = 108

Answer:
5/4
Step-by-step explanation:
, open the bracket
3=28-14u-6u
Collect like terms
3-28=-14u-6u
-25 =-20u
Divide both side by -20
u=-25/-20. Minus sign will cancel each other and reduce to the lowest term
u=5/4
Answer:
What is it?
Step-by-step explanation:
No fine or question.