Answer:
maybe number 2
Step-by-step explanation:
because if 2+k=18 then there is no other k there and where did the additional 2 come from ?and 2k=18 then value of k is 9 + there is balance.I may be wrong correct me but i think it is no.2
Answer:
17.1
Step-by-step explanation:
1. Find the Mean
(25+40+35+25+40+60+75)/7 = 42.9
2.For each number, subtract the Mean and square the result.
(25-42.86)^2=319
(40-42.86)^2=8.2
(35-42.86)^2=61.8
(25-42.86)^2=319
(40-42.86)^2=8.2
(60-42.86)^2=293.8
(75-42.86)^2=1033
3. Find the Mean of those squared differences.
(319+8.2+61.8+319+8.2+293.8+1033)/7=291.9
4.Take the square root of that and this is what you want.
square root of 291.9 = 17.1
Answer: ![\dfrac{16}{49}](https://tex.z-dn.net/?f=%5Cdfrac%7B16%7D%7B49%7D)
Step-by-step explanation:
Given: A bag contains 4 sour-apple candies and 3 watermelon candies.
Total candies = 4+3 = 7
If replacement of candy is done, then the probability of getting sour apple will be the same and independent each time .
Probability of selecting sour apple candy= ![\dfrac{\text{Number of sour apple candy}}{\text{Total}}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Ctext%7BNumber%20of%20sour%20apple%20candy%7D%7D%7B%5Ctext%7BTotal%7D%7D)
![=\dfrac47](https://tex.z-dn.net/?f=%3D%5Cdfrac47)
Now , the probability that both pieces of candy chosen will be sour -apple =![\dfrac47\times\dfrac{4}{7}=\dfrac{16}{49}](https://tex.z-dn.net/?f=%5Cdfrac47%5Ctimes%5Cdfrac%7B4%7D%7B7%7D%3D%5Cdfrac%7B16%7D%7B49%7D)
hence, required probability = ![\dfrac{16}{49}](https://tex.z-dn.net/?f=%5Cdfrac%7B16%7D%7B49%7D)
Answer:
i want to play but don't have it
Step-by-step explanation: