Adding or subtracting a constant from each value of a distribution changes the mean, but not the standard deviation.
The standard deviation will equal 3.
Answer:
4
Step-by-step explanation:
The diagonals are equal length:
![6x - 14 = 8x - 20\\-2x = -6\\x = 3](https://tex.z-dn.net/?f=6x%20-%2014%20%3D%208x%20-%2020%5C%5C-2x%20%3D%20-6%5C%5Cx%20%3D%203)
![BD = 6x - 14\\BD = 6 * 3 - 14\\BD = 18 - 14\\BD = 4](https://tex.z-dn.net/?f=BD%20%3D%206x%20-%2014%5C%5CBD%20%3D%206%20%2A%203%20-%2014%5C%5CBD%20%3D%2018%20-%2014%5C%5CBD%20%3D%204)
Answer:
<h2>2400GH Cedis </h2>
Step-by-step explanation:
![Selling \:price = 3000gh Cedis\\Profit \% = 25\%\\Cost\:price =?\\\\CP =\frac{ ( Selling\:price \times 100 )}{ ( 100 + percentage profit)} \\\\C.P = \frac{3000\times 100 }{100+25}\\\\ C.P = \frac{300000}{125} \\\\Cost\: Price = 2400gh Cedis](https://tex.z-dn.net/?f=Selling%20%5C%3Aprice%20%3D%203000gh%20Cedis%5C%5CProfit%20%5C%25%20%3D%2025%5C%25%5C%5CCost%5C%3Aprice%20%3D%3F%5C%5C%5C%5CCP%20%3D%5Cfrac%7B%20%28%20Selling%5C%3Aprice%20%5Ctimes%20100%20%29%7D%7B%20%28%20100%20%2B%20percentage%20profit%29%7D%20%20%5C%5C%5C%5CC.P%20%3D%20%5Cfrac%7B3000%5Ctimes%20100%20%7D%7B100%2B25%7D%5C%5C%5C%5C%20C.P%20%3D%20%5Cfrac%7B300000%7D%7B125%7D%20%5C%5C%5C%5CCost%5C%3A%20Price%20%3D%202400gh%20Cedis)
Answer:
109 car stereos
Step-by-step explanation:
If 149 car stereos had a CD player (with or without a cassette player), and 40 car stereos had both a CD and a cassette player, the number of stereos with only a CD player is determined by:
![CD_{only} = CD - Both\\CD_{only} =149-40\\CD_{only} =109\ car\ stereos](https://tex.z-dn.net/?f=CD_%7Bonly%7D%20%3D%20CD%20-%20Both%5C%5CCD_%7Bonly%7D%20%3D149-40%5C%5CCD_%7Bonly%7D%20%3D109%5C%20car%5C%20stereos)
109 car stereos had only a CD player.
The answer is 4 if I am correct