Answer: 5,800 $15 tickets, 1,800 $25 tickets
Explanation
x= the first type of ticket
y= second type of ticket
First add x and y to equal total of tickets.
x+y= 7600
Next add 15x and 25y to equal total cost.
15x+25y=159,000
So we have
x+y= 7600
15x+25y=159,000
Let’s use the substitution method to get our answers. So lets arrange the equations and different way.
x= 7600-y
15x+25y=159,000
Now let’s substitute the x into the second equation.
15(7600-y)+25y= 159,000 *Distribute 15*
114,000+25y= 159,000 *Subtract
114,000*
25y= 45,000 *Divide 45,000 by 25*
y=1,800
Now let’s replace y with 1,800 to get our x
x+1,800= 7600*Subtract 1,800 from 7,600*
x= 5,800
Hope this helped :3
Answer:
4.5
Step-by-step explanation:
Answer:
The 95% confidence interval for the fraction of all shoppers during the year whose visit was because of a coupon they'd received in the mail is (0.2016, 0.2694).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the z-score that has a p-value of .
A store randomly samples 603 shoppers over the course of a year and finds that 142 of them made their visit because of a coupon they'd received in the mail.
This means that
95% confidence level
So , z is the value of Z that has a p-value of , so .
The lower limit of this interval is:
The upper limit of this interval is:
The 95% confidence interval for the fraction of all shoppers during the year whose visit was because of a coupon they'd received in the mail is (0.2016, 0.2694).
Solve for n :
N=9
...........
you have to plug in the x value to discover the y
y= 4.3 x 1
y = 4.3
so, the ordered pair is (1, 4.3)
<em>hope it helps :)</em>