X1| 14 | 16 | 19 | 21 | 23 | 24 | 29
plx) 0.07 0.21 0.17 0.25 0.05 0.04 0.13 0.08
the mean of the discrete random variable xis 18.59. what is the variance
of x? round your answer to the nearest hundredth.
o a. 28.34
o b. 31.06
o c. 23.18
o d. 35.92

step-by-step explanation:

if u want da anser kill your teeser ifu hav wun

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

look at the picture i have filled out a table for it. hope this .

perimeter = 10 +  √10  units

explanation:

first, we will need to get the length of each line using the distance formula which is as follows:

distance = 

1- length of ab:

ab =   = 5 units

2- length of ac

length of ac is the same as ab = 5 units

3- length of bc:

bc =   =  √10  units

now, we can get the perimeter by adding the side lengths as follows:

perimeter = 5 + 5 +  √10

perimeter = 10 +  √10  units

hope this : )

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