Answer:
hmm a chicken
Step-by-step explanation:
Answer: 2.460
Step-by-step explanation:
The formula of Margin of Error for (n<30):-

Given : Sample size : n= 18
Level of confidence = 0.90
Significance level : 
Using the t-distribution table ,
Critical value : 
Standard deviation: 
Then, we have

Hence, the margin of error (ME) of the confidence interval with a 90% confidence level = 2.460
Answer:
50
Step-by-step explanation:
since the two angles combined must equal 90 degrees we can add both the angle measures and make it equal 90
3x+30=90
3x=60
x=20
2(20)+10=50