When solving for the sample size needed to compute a 95 percent confidence interval for a population proportion p, having a given error bound e, we choose a value of that: makes as close to .5 as reasonably possible. makes as small as reasonably possible. both makes as large as reasonably possible and makes as close to .25 as reasonably possible are correct. makes as close to .25 as reasonably possible. makes as large as reasonably possible.

after simplifying it i got: -36.25 as my answer. hope that !

it would be 6xy and -16xy.

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

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