Step-by-step explanation:
Let the required number be x.
According to the given information:

Hence the required number is 31.
72 m^2 (72 meters squared)
Answer:
a. 9
b. 6
Step-by-step explanation:
a. z=12 - 3= 9
b. (36 - 18)/3= Z
This is quite easy, but anyway:
In order, they are
3, 4, 4, 5, 5, 5, 5, 7, 7
7 - 3 = 4
4 would be the range