Answer:
(9 × 3x+7) - (5 × x+2)
Step-by-step explanation:
Red area
9 × 3x + 7
white area
5 × x+2
Answer:The mean absolute deviation of the set of data is
2.24
.
Step-by-step explanation:
Answer:
One hour’s sleep before midnight is worth three after.
B, because 40 and 40 make 80 and 180-80=100<span />