Answer:
The sum of the first 18 odd positive integers is 324.
Step-by-step explanation:
Given : The first 18 odd positive integers.
To find : The sum of the first 18 odd positive integers?
Solution :
The odd positive integers are 1,3,5,.... forming an Arithmetic sequence .
Where, First term is a=1
Common difference is d=2
Number of terms n=18
The sum of A.P formula is
![S_n=\frac{n}{2}[2a+(n-1)d]](https://tex.z-dn.net/?f=S_n%3D%5Cfrac%7Bn%7D%7B2%7D%5B2a%2B%28n-1%29d%5D)
Substitute the values in the formula,
![S_{18}=\frac{18}{2}[2(1)+(18-1)2]](https://tex.z-dn.net/?f=S_%7B18%7D%3D%5Cfrac%7B18%7D%7B2%7D%5B2%281%29%2B%2818-1%292%5D)
![S_{18}=9[2+(17)2]](https://tex.z-dn.net/?f=S_%7B18%7D%3D9%5B2%2B%2817%292%5D)
![S_{18}=9[2+34]](https://tex.z-dn.net/?f=S_%7B18%7D%3D9%5B2%2B34%5D)
![S_{18}=9[36]](https://tex.z-dn.net/?f=S_%7B18%7D%3D9%5B36%5D)

Therefore, The sum of the first 18 odd positive integers is 324.
Answer The Mexican tribe where children of FOUR are fed mind-bending magic mushrooms by witchdoctors in 'surviving childhood' rituals
The hallucinogenic mushrooms grow in the hills of Mexico's Oaxaca state
Shamans give them to young children to celebrate their 'surviving infancy'
Alejandro Garces, three, will be fed the mushrooms by his parents in June
His family will chant to give thanks to pagan gods when the effects kick inStep-by-step explanation:
They put 138 into groups of 6, so divide 138 by 6.
138/6
23 craft kits.
Hope this helps! :D
Answer:
You can use the formula for the perimeter of a square to find the length of one of the square's sides. Then substitute that information into the formula for the area of a square and solve.
Step-by-step explanation:
Taking the exam same as you 90 % sure this is right