57 degrees because 180-123= 57 degrees
1/2 t-4(2+t)=20
1/2 t-8-4t=20
least common multiple=2
t-16-8t=40
-7t=40+16
-7t=56
t=56/-7=-8
Answer: t=-8
To check
-8/2 - 4(2-8)=-4-4(-6)=-4+24=20
Answer:
4 cu. units
Step-by-step explanation:
1/3x2x2x3=4 cu. units
If this talks about the diagonal of the flooring then it is 9m
