Answer:
4.0486
Step-by-step explanation:
The margin of error is calculated using 
Where n=60 is the sample size and 
is the population standard deviation.
The critical value corresponding to 95% confidence interval is 
We substitute the values to obtain;
Answer:
negative
Step-by-step explanation:
1/3 - 4/5
Get a common denominator of 15
1/3*5/5 = 5/15
4/5*3/3 = 12/15
5/15 - 12/15
-7/15
Answer:
$25.40
Step-by-step explanation:
Find the unit price. So what you do is just divide 304.80 by 12 to get the price of one which comes out to be $25.40
Answer:
42°
Step-by-step explanation:
3x + 54° = 180° [Supplementary angles]
=> 3x = 180 - 54
=> 3x = 126
=> <u>x = 42</u><u>°</u><u> </u><u>(Ans)</u>
For the third one, on the left side do 3-51.29 and keep doing it like that and you should get all the answers you need :)
