Answer:
❤️❤️ your answer is either 1 or 9 and i show the work for when you get the answer 1 and the work for haw you get the answer 9 if there is something wrong with my problem just let me know thanks ❤️❤️
Step-by-step explanation:
3x+4(8)=5x+2(7)
3x+32=5x+14
-14 -14
3x+18=5x
-3x -3x
18=2x
x=9
__________________________________________________________
3x+4=5x+2
-2 -2
3x+2=5x
-3x -3x
2=2x
x=1
Answer:
The 95% confidence interval based on this sample is =
[6.41, 7.79]
Step-by-step explanation:
The formula for Confidence Interval =
Mean ± z × standard deviation/√n
Sample mean = 7.1 hours
Standard deviation = 5 hours
n = 200 students
z = 95% confidence interval z score
= 1.96
C.I = 7.1 ± 1.96 × 5/√200
C.I = 7.1 ± 0.693
Hence, Confidence Interval
= 7.1 - 0.693
= 6.407
Approximately = 6.41
= 7.1 + 0.693
= 7.793
Approximately = 7.79
Therefore, the 95% confidence interval based on this sample is
[6.41, 7.79]
5y + 2 = 4.5
-2 -2
5y = 2.5
5y/5 = 2.5/5
y = 0.5
Answer: y = 0.5
Answer: No, because when you add all the lengths together you end up with 59 not 60. It would only be reasonable to say 60 if you were estimating or you ended up with a decimal like 59.9 and the question asked you to round to the nearest whole number. However, since it doesn't you cannot say it is 60 feet because the answer is 59 feet long.