The circle below is centered at the point (2, -1) and has a radius of length 3. What is its equation?
O A. (x - 2)² + (w+ 1)2 = 3^2
OB. (x + 1)2+(-2)² = 9.
O c. (x-1)2 + (x + 2)² = 9
D. (x + 2) + -1/2 = 3^2

u dumb boi

step-by-step explanation:

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;