Let u represent the set of people in a certain community who were asked if they subscribe to an information source. let d ={ x ∈ u | x subscribes to the daily informer } and n ={ x ∈ u | x subscribes to news magazine } (assume these sets are not disjoint.) write the set that represents the set of people surveyed who subscribe to exactly one of the two news sources given.

a. n ∪ d
b. ( n c ∩ d ) ∪ ( n ∩ d c )
c. n c ∩ d
d. ( n ∩ d )c
e. ( n c ∪ d ) ∩ ( n ∪ d c )

b.

Step-by-step explanation:

Here,

N = { x ∈ U | x subscribes to News Magazine },

D = { x ∈ U | x subscribes to The Daily Informer },

Such that N∩D ≠ ∅,

Now, the number of the set of people surveyed who subscribe only News Magazine

= Subscribe News Magazine and not Daily Informer

=

Similarly, the number of the set of people surveyed who subscribe only Daily informer

= Subscribe Daily informer and not subscribe News Magazine

=

Hence,  the set of people surveyed who subscribe to exactly one of the two news sources given

= Subscribe News Magazine and not subscribe Daily Informer or subscribe Daily informer and not subscribe News Magazine

your answer is a

step-by-step explanation:

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x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)