carmen just put 14.85 gallons of fuel into her car. there were 4.2 gallons in the car to begin with. how much fuel is in carmen's car now?​

19.05

Step-by-step explanation:

14.85 + 4.2 = 19.05

14.85+4.20= 19.05 gallons of gas is what she put in her car

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !

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;