H is 2t
h + t = 84
2t + t = 84
3t =84
t = 28
Thomas is 28 and huilan is 56
You need to set this up with a proportion and solve. 18/x-5 = 13.5/12.
cross multiply 13.5x-67.5=216
now solve for x
13.5x=283.5
x=21
the missing side is equal to 21-5, which is equal to16
1)
A sequence is arithmetic if the difference between consecutive terms is constant.
1, 4, 9, 16, ... is not an arithmetic sequence.
2)
The fifth term is -8.
30% = 3/10 = .3
70 x .3 = 21