Answer:
7881.75
Step-by-step explanation:
10,170x0.775
R= {a,b,c}
S = {b, c, d}
T = {c, d, e},
R U S U T. ={a,b,c}U{b, c, d}U{c, d, e},={a,b,c,d,e}
Whole, integer, and rational
lol it's so hard I can't proses