Answer:
x+19=19+x
Step-by-step explanation:
AC=6
Ab=3
BC= 6.708
a^2+b^2=c^2
so 6*6 is 36
3*3 is 9
36+9=45
Square root 45 and you get 6.708 for BC
(8-3x)/4
3x+4y=8
4y=8-3x
y=(8-3x)/4
So the answer is (8-3x)/4