To find the area you do A=bh(basexheight) 12x8=96
510 = (1700)(6)(t)
510 = 10200t
0.05 = T
4) 0=-5n-2n
0=-7n
n=0
5) 6r-1+6r=11
12r-1+11
12r=12
r=1
6) r+11+8r=29
9r=18
r=2
7) -10=-14v+14v
-10=0
no solution because the sides are not equal
10) a-2+3=-2
a+1=-2
a=-3
11) 18=3(3x-6)
18=9x-18
36=9x
9x=36
x=4
hope i could help
