Could you attach an illustration? I apologise.
Answer:
The missing information is how much was the unit rate for the adult tickets.
Step-by-step explanation:
You need the missing information about the unit rate for the adult tickets because without that, you cannot answer how much you earned for the play in total. But with the information that we have, we can safely say that we earned 560$ from the students ticket. 560 is not the final answer.
Answer:
a. Ryan 70mph. Janelle 65mph.
b. 4 hours and 48 minutes.
Step-by-step explanation:
a. Ryan 245/3.5=70 mph. Janelle 260/4=65 mph.
b. If Janelle drives 575 miles with the speed of 65 mph, in total it would take her 575/65=8.8 hours, which is 4.8 hours more than 4 hours. (0.8 hours is 48 minutes).
Divide the number of homes by the sample size:
500 out of 1200 houses = 0.4166
Now find the sample proportion:
p(1-p)/n = 0.4166((1-0.4166)/1200)= 0.0002
Take the square root: √0.0002 = 0.014
Multiply that by the Z value for 95% which is 1.96:
1.96 x 0.014 = 0.028 x 100 = 2.8%
The confidence interval is the percentage of homes from above ( 0.4166 plus and minus the sample proportion:
0.4166 - 0.028 = 0.3886
0.4166 + 0.028 = 0.4446
[0.3888, 0.4446]