7 > z + 18 ≥ 6
Subtract 18 from all 3 parts:
7-18 > z +18 -18 ≥ 6-18
-11 > z ≥ -12
Answer (13 of the original arrangements are duplicates now, as
AAAF F F FDDDDCC, AAF F F FDDDDCCA, ..., CAAAF F F FDDDDC
are identical): 900900/13 = 69300.
Answer:
Step-by-step explanation:
Answer:
x=2 y=1
Step-by-step explanation:
3 times 2 =6
plus 1 = 7
Answer:
3x
Step-by-step explanation:
3 . x is 3x