Let
x-----------> the number of kids
y----------> the number of adults
we know that
2.5x+6y=$7150---------> equation 1
x=2y-------------> equation 2
substitute 2 in 1
2.5*[2y]+6y=7150-----> 5y+6y=7150----> 11y=7150-----> y=650
x=2y----> x=2*650----> 1300
the answer is
the number of kids is 1300
Answer:
x=1/2
Step-by-step explanation:
Answer:
12.47, 12.075, 11 1/4, 11, -12, -12.004, -12.01
Answer: 0.5467
Step-by-step explanation:
Let X be the random variable that represents the income (in dollars) of a randomly selected person.
Given : 

Sample size : n=350
z-score : 
To find the probability that the sample mean would differ from the true mean by less than 22 dollars, the interval will be

For x=15429

For x=15473

The required probability :-

Hence, the required probability is 0.5467.