Answer:
2775
Step-by-step explanation:
Well of course since the problem is not restricted, the smallest number is 3. I'm almost sure that's not what you mean. The next smallest number is 2775. I found that using a programing language. I'm sure as well that does not satisfy the question, either.
I think you are intended to do this by finding the lowest common multiple and adding 3.
21: 3 * 7
28: 2 * 2 * 7
36: 2 * 2 * 3 * 3
44: 2 * 2 * 11
LCM = 2 * 2 * 3 * 3 * 7 * 11 = 2772
Now add 3 and the number you want is 2775
Answer:
The numbers below are all grater than one:
#2
#3
#4
Step-by-step explanation:
ʕ•ᴥ•ʔ
As we can assume the relationship is directly proportional, we have to build the proportion and do the cross product. So:

She needs 3 nights
It is C (2, 1) I think it is because they intersect
Explanation:
Formula to calculate pH of a chemical or solution is as follows.
pH = ![-log [H^{+}]](https://tex.z-dn.net/?f=-log%20%5BH%5E%7B%2B%7D%5D)
Therefore, calculate the pH of given chemicals as follows.
1). Oven cleaner
pH = ![-log [H^{+}]](https://tex.z-dn.net/?f=-log%20%5BH%5E%7B%2B%7D%5D)
= ![-log [10^{-13}]](https://tex.z-dn.net/?f=-log%20%5B10%5E%7B-13%7D%5D)
= 13
2). Water
pH = ![-log [H^{+}]](https://tex.z-dn.net/?f=-log%20%5BH%5E%7B%2B%7D%5D)
=
= 6.15
3). Blood
pH =
= ![-log [4 \times 10^{-8}]](https://tex.z-dn.net/?f=-log%20%5B4%20%5Ctimes%2010%5E%7B-8%7D%5D)
= 7.40
4). Vinegar
pH =
= ![-log [63 \times 10^{-4}]](https://tex.z-dn.net/?f=-log%20%5B63%20%5Ctimes%2010%5E%7B-4%7D%5D)
= 2.20