Answer:
Step-by-step explanation:
For this case we have the following info given:
represent the sample mean
represent the sample deviation
represent the sample size
The confidence interval is given by:
The confidence interval is 98% and the significance level is 
the degrees of freedom are given by:
And the critical value would be:
And replacing we got:
Answer:
Step-by-step explanation:
So technically all you need to do is what number is in front of it and what number is in back of it.
This conic section is an ellipse.
Here: 2a = 10 ( the major axis ) and 2 b = 6 ( the minor axis );
and the formula is:
x² / a² + y² / b² = 1
So: a = 10 : 2 = 5 and b = 6 : 2 = 3.
x² / 5² + y² / 3² = 1
Answer:
The equation is: x² / 25 + y² / 9 = 1.
Answer:
<em>2(x+3)</em>
Step-by-step explanation:
when adding, take the constant aside and group the similar variables together. In this case, the constant was 6 and the variable was x.
x+ x+ 6, can also be written as (2 times x) + 6.
= 2x + 6, which can also be written as 2(x+3)
<em>Hope this helps.</em>
Well, since each doll hair is 22cm, and she had a total of 165cm.
Then number of dolls would be = 165/22 = 7.5
The actual number of dolls = 7. We would drop the .5.
7, Seven.
