heyperdomo4369
10.04.2021 •
Mathematics
58. A news agent conducted a survey of business magazine subscribers in a town and found that
there was circulation of only three business magazines. He made the Venn diagram below to show
the number of subscribers to each of the three magazines: Board Review, Strategy and Finance,
and Investor Journal.
Magazine Subscription
232
196
41
133
Board Review
Set B
Strategy and Finance
Set S
t 5.2
21.
52
84
284
232
232
t 196
428
1
Investor Journal
How many subscribers belong to the set (~$94U UB?
A. 484
B. 443
C. 422
84
Hab
280
D. 370
1133
tlab
a
Solved
Show answers
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Ответ:
30, 10
Step-by-step explanation:
length=x
wdith=y
xy=300, x=3y
replace x with 3y in the first equation to get
3y^2=300
y^2=100
since you cant have a negative side of a garden, y=10. x=30.