Ok so we want to cross multiply.
To do this you know 4/9=2$ so now you want to know 1=x$
When you do this you get $5
Answer: d) $369.31 to $380.69
Step-by-step explanation:
Given;
Mean price x= $375
Standard deviation r= $20
Number of retail stores n = 50
Confidence interval of 95%
Z*(95%) = 1.96
Confidence interval = x+/-Z*(r/√n)
= $375+/- 1.96(20/√50)
= $375+/- 5.69
Confidence interval = ($369.31 to $380.79)
The answers are A. E. I. D. H
Answer:
The largest possible area is 10,000 square feet
Step-by-step explanation:
Since she has 400 ft of fencing material, this means that the perimeter of the pen will be 400 ft
Mathematically, the perimeter of a rectangle is is;
2(l + b) = 400
Thus, l + b = 400/2
l + b =200
This means the length and width pen add up to 200
Mathematically, the maximum area can be obtained if the side of the length and the width are equal
So we will have to share the 200 into 2 , that makes 100 for each
The largest possible area is thus;
100 ft * 100 ft = 10,000 square feet
