If d varies directly with t and d is 105 when t is 3, what is d when t is 8

D = 280

Step-by-step explanation:

We are given that

D∝t

Using constant of proportionality k we can say that

D=kt

where k is always constant for all values of t and D

now we are given that for t=3 , we have D=105

This will help us to determine k , once we have the value of k , we can determine the D when t=8

Hence Now we have

D=105 when t=3

putting them into

D=kt

105=3k

k=35

Hence we now know the value of k as 35

Now we find D at t=8

D=kt

D=35 x 8

D=280

Hence this is our answer D= 280

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.