Answer:
the one on the left
Step-by-step explanation:
Answer:
i) Mean = 1933.1817
ii) Range = 5684
iii) Third quartile = 6054
Step-by-step explanation:
Given data :
currency exchange rate : 1 AUD = 5.8 HKD
cost of each ounce = 2 AUD
Fixed shipping cost for each carton = 80 HKD
number of cartons = 20
next determine the total cost of the 20 cartons in HKD
= ∑(weight in ounce * cost of each ounce *exchange rate) +fixed shipping cost
= ∑ ( 160*2*5.8 + 80 ) + -------------- + (650 *2*5.8 + 80 ) ----------------- ( 1 )
= 81756 HKD
<u>i) find the mean value ( X ) </u>
= Total cost / number of cartons
= 81756 / 20 = 4087.8
ii) Find the standard deviation
= note: std = √∑(xi-X )^2 / (n-1)
= 1933.1817
<u>iii) Find the range </u>
Range = highest cost - lowest cost ( values gotten from equation 1 )
= 7650 - 1936
= 5684
<u>iv) Determine the third quartile </u>
third quartile = 6054
<em>attached below is the detailed solution</em>
Given : (ai + 3)(ai - 6)
⇒ (ai)(ai) - 6(ai) + 3(ai) - 18
⇒ a²i² - 3ai - 18
We know that i² = -1
⇒ -a² - 3ai - 18
Option 3 is the Answer
Answer:
See explanation
Step-by-step explanation:
The question is incomplete, as the graph or points of each city are not given.
So, I will provide a general explanation.
To calculate the equation of line through two points;
Start by writing out the coordinates of the two points.
For instance:
This points will be represented as:
Calculate the slope (m)
Simplify
The equation is then calculated as:
This gives:
Open bracket
<em>Apply the above steps in the original question</em>
Answer:
25
Step-by-step explanation:
count the frequencies so to get your answer. It is 25.
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