True
Every function is a relation, but not every relation is a function.
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Answer:
Part 1) The perimeter of the park is
Part 2) The area of the park is
Step-by-step explanation:
see the attached figure to better understand the problem
Part 1) Find the perimeter pf the park
we know that
The perimeter of the figure is the sum of its six length sides (see the figure)
so
Part 2) Find the area of the park
The area of the park is equal to the area of two rectangles
The area of rectangle is equal to
substitute the values
The sample size needed to obtain a margin of error of 0.05 for the estimation of a population proportion is 384.
Given margin of error of 0.05 and confidence interval of 95%.
We have to find the sample size needed to obtain a margin of error of 0.5 with confidence level of 95%.
Margin of error is the difference between real values and calculated values.
The formula of margin of error is as under:
Margin of error=z*σ/
where
z is the critical value of z for given confidence level
n is sample size
σ is population standard deviation
We have not given population standard deviation so we will use the following formula:
Margin of error=z*/
We have to find z value for 95% confidence level.
z value=1.96
We know that <=1/2
put =1/2
Margin of error=1.96*1/2/
0.05=1.96*0.5/
=0.98/0.05
=19.6
squaring both sides
n=384.16
After rounding off we will get
n=384.
Hence the sample size needed to obtain a margin of error of 0.05 is 384.
Learn more about margin of error at brainly.com/question/10218601
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Answer:yes
15x times 2=30x
15x times 3= 45x
3y tines 2 =6y
3y times 3=9y
Step-by-step explanation:
Yes ? What’s the question?