Answer: a) 84 and b ) 2084
Step-by-step explanation:
Given : Sample standard deviation : s= $22.82
(Population standard deviation is unknown ) , so we use t-test.
Critical value or the 95% confidence intervals :
Formula to find the sample size :
a) E = 5
i.e. Required sample size : n= 84
b) E = 1
i.e. Required sample size : n= 2084
Answer:
<u><em>$4.50 or $4.5</em></u>
Step-by-step explanation:
<em><u>well, this is easy</u></em>
<em><u>30% equals to 0.30 right.</u></em>
<em><u>we can't divide because if we do then the answer would be 50$ and that's way more money than Jill has.</u></em>
<em><u>so your wondering. What do we do?</u></em>
<em><u>Well, what's 30% of 15?</u></em>
<em><u>It's 4.5</u></em>
<em><u>4 dollars and 5 cents that U will have with Jill.</u></em>
Answer:
Step-by-step explanation:
1st boat:
Parabola equation:
The x-coordinate of the vertex:
Equation:
The y-coordinate of the vertex:
Parabola passes through the point (-8,1), so
Solve:
Parabola equation:
2nd boat:
Parabola equation:
The x-coordinate of the vertex:
Equation:
The y-coordinate of the vertex:
Parabola passes through the point (-8,1), so
Solve:
Parabola equation:
System of two equations:
Answer: (A) 352 π units^2
Explanation in image.
Knowledge point:
Geometry - cylinder area formula
Original price×(1-discount price)=new price or sale price so
Put x in original price...x(1-45/100)=550
So the original price is 1000