Answer:
The number of required shelves is 5
You have to find the HCF of 45, 105, and 75.
Answer:

Step-by-step explanation:
To evaluate :

Solution:
Two negatives multiply to become a positive.
Thus, we can remove parenthesis by reversing the signs of the fraction by multiplying the negative outside.
⇒ 
Since the denominators are same for both fractions, so we simply add the numerators.
⇒ 
⇒
(Answer)
Answer: 12 years old
Step-by-step explanation:
10,11,12,12,13,13,14
The middle in these numbers is 12
Answer:
40
Step-by-step explanation:
Sums:
1, 3
2, 2
4, 0
31 and 22 are to small of numbers. That leaves 40.
40 and 04
so 40
- 04
____
= 36
Good luck,
Camryn :)