Mark flew from boston to baltimore, then baltimore to orlando. the number of people on his first flight was five more than four times the number of people on his second flight. if there were 365 people altogether on the two flights, how many were on the flight to baltimore to orlando

There are 72 people in the flight from Baltimore to Orlando .

Explanation:

The number of people on his first flight =five more than four times the number of people on his second flight.  

Let the number of people on 2 nd flight be n,  

then number of people on1 st flight will be 5 + 4 x n = 4n + 5

If there were 365 people altogether on the two flights, then the number of people on the flight to Baltimore to Orlando

n + (4n + 5) = 365  

n + 4n = 365 – 5  

5n = 360  

n = 72

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;