Answer:
{0.3, -1.4, -1.7}
Step-by-step explanation:
To compare these three numbers, we should first put them into the same form.
3/10 would be 0.3; -1.4 stays as is; and -1 28/40, expressed as a mixed number with a decimal fraction, would be -1.7.
Arranged in descending order, this set of numbers is {0.3, -1.4, -1.7}
