0.09/10=0.009
we check it: 0.009*10=0.09, so it's right
2t+5v=37 and 4t+3v=39
Solve the first for t
t=18.5-2.5v and use this t in the second equation...
4(18.5-2.5v)+3v=39
74-10v+3v=39
-7v=-35
v=$5.00 and since t=18.5-2.5v
t=$6.00
So tuna sandwiches cost $6.00 and vegetarian sandwiches cost $5.00.
(x + 7) - (3x + 4)=
x + 7 - 3x - 4 =
-2x + 3
5.5+-3.3 is the same as 5.5-3.3 so
5.5
-3.3
——
2.2
5-3 = 2
5-3 = 2
(Bring decimal down)
Perimeter = 2l+2w in this case. So 16+12, 28 feet is your answer!
