Will 5x-3y>15 have a solid line
1 answer:
Answer:
The inequality have a dashed line
Step-by-step explanation:
we have
The solution of this inequality is the shaded area below the dashed line
The equation of the dashed line is
The slope of the dashed line is positive
The y-intercept of the dashed line is -5 ---> point (0,-5)
The x-intercept of the dashed line is x=3 ----> point (3,0)
Graph the solution
see the attached figure
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Answer: 68
Step-by-step explanation:
As per given , we have
Population standard deviation :
Critical value for 90% confidence interval =
Margin of error : E= 0.8 milligrams
The formula to find the sample size is given by :-
i.e.
Hence, the limnologist must analyze 68 samples.