19-2t = 7 -2t = 7-19 -2t = -12 t = 6
An equation?
4000 lbs.
89+2t = 10t+25 89-25 = 10t-2t 64 = 8t t = 8
12(t+6)+8=4(2t-1)+2t 12t+72+8=8t-4+2t 12t-2t-8t=-72-8-4 2t=-84 2t/2=84/2 t=42
2t
2t-3-3 = 7 2t = 7+6 2t = 13 t = 6.5
In 2t+8 19
19-2t = 7 -2t = 7-19 -2t = -12 t = 6
An equation?
75+2t=100-2t 4t=25 t=6.25 So t is 6.25 or 25/4.
3t + 7 = 2t - 5 3t = 2t - 12 t = -12
4000 lbs.
89+2t = 10t+25 89-25 = 10t-2t 64 = 8t t = 8
-2t = -10
12(t+6)+8=4(2t-1)+2t 12t+72+8=8t-4+2t 12t-2t-8t=-72-8-4 2t=-84 2t/2=84/2 t=42
3tan (2t) = sqrt(3) tan (2t) = sqrt(3)/3 = 0.577 from tangent tables, 2t = 30 degrees t = 15 degrees