A chemical is diluted out of a tank by pumping pure water into the tank and pumping the existing solution out of it, so the volume at any time that is 20 2t20 2t20, plus, 2, to. The amount zzz of chemical in the tank decreases at a rate proportional to zzz and inversely proportional to the volume of solution in the tank. Which equation describes this relationship

all but the second one

step-by-step explanation:

cuz that one goes over 180

mark brainliest

14

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;

493 would be the correct answer

step-by-step explanation: