The beginning is 4 go down 5 and over one
Answer:
62.83
Step-by-step explanation:
Circumference=2 pi r
diameter=20
20*pi= about 62.83
so it sould be around 62.83
The answer would be 2.273*10^-3
Answer:
x=9
Step-by-step explanation:
since the location of 4x+2 and 7x-25 is across from each other that means that they are equal to each other so you have to set them equal to each other by doing 4x+2=7x-25 then you add like terms you add 25 and 2 together which gives you 27 and the equation will look like 4x+27=7x and then you subtract 4x from 7x which gives you 3x and u get the equation 27=3x now you divide 27 by 3 and get 9 so the equation will be x=9
Answer:
New year Standard deviation = 2255.25
Step-by-step explanation:
Years: 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003
New Year: 141 142 178 72 219 138 171 134 210 70
Memorial: 191 174 185 197 138 183 156 190 188 181
Formula:
![Mean = \displaystyle\frac{\text{Sum of all observation}}{\text{Total number of observations}}](https://tex.z-dn.net/?f=Mean%20%3D%20%5Cdisplaystyle%5Cfrac%7B%5Ctext%7BSum%20of%20all%20observation%7D%7D%7B%5Ctext%7BTotal%20number%20of%20observations%7D%7D)
![S.D = \sqrt{\displaystyle\frac{\sum(x_i - \bar{x})^2}{n}}](https://tex.z-dn.net/?f=S.D%20%3D%20%5Csqrt%7B%5Cdisplaystyle%5Cfrac%7B%5Csum%28x_i%20-%20%5Cbar%7Bx%7D%29%5E2%7D%7Bn%7D%7D)
a) Mean = ![\frac{1475}{10} = 147.5](https://tex.z-dn.net/?f=%5Cfrac%7B1475%7D%7B10%7D%20%3D%20147.5)
![S.D = \sqrt{\frac{42.25+ 30.25+ 930.25+5700.25+ 5112.25+ 90.25+ 552.25+ 182.25+ 3906.25+ 6006.25}{10}}\\= \sqrt{\frac{22552.5}{10} }\\= 2255.25](https://tex.z-dn.net/?f=S.D%20%3D%20%5Csqrt%7B%5Cfrac%7B42.25%2B%2030.25%2B%20930.25%2B5700.25%2B%205112.25%2B%2090.25%2B%20552.25%2B%20182.25%2B%203906.25%2B%206006.25%7D%7B10%7D%7D%5C%5C%3D%20%5Csqrt%7B%5Cfrac%7B22552.5%7D%7B10%7D%20%7D%5C%5C%3D%202255.25)
b) The standard deviation of the memorial day will be less than the new years day because for memorial day, the data points are not varying as in case of new year. Basically, we can say the spread in case of new year is more as compared to memorial day. Hence, standard deviation of memorial year is less than the new years day.