0
Wiki User
5.5
The tenth triangular number is equal to (10 x 11) / 2 = 55.
55.0
55
It is 7.4
.0165
-55
55 is.
1 / 20 = 0.05 0.05 * 11 = 0.55 So, eleven twentieths as a decimal is 0.55
The answer is 7.4