Answer:
The answer is...
Step-by-step explanation:
2,3. 2,3 is the length of the fourth shelf.
Answer:
1.2%
Step-by-step explanation:
List all the possible pairs and divide 1 by the sum.
Since there were 86 possible pairs,
1/86 is nearly equal to o.o12
Lets make this unknown number named X
74-32=x-30
42=x-30
x=72
74-32=72-30
Positive 9 is the answer whenever numbers are like that its positive