Write tow additions that each have asum of -21.5.

problem 1: -10.75+(-10.75)= -21.5

problem 2: (−5.375)+(−5.375)+(−5.375)

+(−5.375)= -21.5

Step-by-step explanation:

for the first one is just divided -21.5 by two and added the sum with itself.

for the second I divided -21.5 by 4 and added the sum up 4 times to get -21.5 again.

the equations might look a little too complicated but I hope this helped!

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

6x = 48

i hope this . 6 cards each and a total of $48. dvide each side by 6 and you will have your answer.