Suppose you are building a rectangular pen for your goats. you use 400 feet of fencing for the pen. let represent the pen’s length (in feet).
part a: which of the following expressions could represent the width of the pen?
a 2+400 b 200− c 2−400 d 400(2)
part b: find the width of the pen if you make the pen 80 feet long.
part c: find the width and the area of the pen if the length is 90 feet.

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;

explanation:

step-by-step explanation:

can someone me: the midsegment through the legs of an isosceles triangle is 4 in. find the sides of the triangle if its perimeter is 20 in. ,   and point g is the centroid of the right △abc with hypotenuse ab=18 in. find cg.