At a local zoo a child ticket costs $8.50 and an adult ticket costs $12.50. on one weekend in june they sold a total $1,374 worth of 140 tickets, what system of equations can be used to find how many of each ticket was sold?

step-by-step explanation:

hunhgunyt7 in u uuuhiuteu

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;

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2