? The diameter of a circle is two times its radius. Which equation shows
another way to represent the area of a circle?
πd2
A=
2
O πd2
A=
4
Ο Α = 2πd?
O A=47d2

d

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;

after 1 year: 221 deer

step-by-step explanation:

30% of 170 is 51. 170+51=221