Answer:
The MAD of {12, 10, 10, 8, 6, 7, 7, 12} is 2.
Step-by-step explanation:
<u><em>Step 1 : Add all the values Up:</em></u>
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<u><em>Step 2 : Divide them by the number of items or numbers:</em></u>
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<u><em>Step 3: Find the absolute deviations:</em></u>
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<u><em>Step 4: Add all the absolute deviations:</em></u>
<u><em>Step 5: Find the mean:</em></u>
Answer:
To find the mean of a data set you have add all the values together and divide by the number of values in the set. The result is your mean
Step-by-step explanation:
Such as finding the mean of 1, 2, 4, 7, 9 as an example
Adding those numbers together you get 23. You then divide 23 by 5, given that there are 5 values above. 23/5 is 4.6. The mean would be 4.6
Assume all items are Lipgloss
Total Cost -> $7 x 9 = $63
difference-> $63-$50.50= $12.50
Assume that all were Lipgloss except for one item
Total Cost-> ($7x8)+$4.50= $60.50
diff-> $63-$60.50=$2.50
Number of Nail Polishes-> $12.50 diveded by $2.50 = 5
Number of Lipglosses-> 9-5=4
ANSWER:
Lipglosses:4
Nail Polishes :5
Answer:
272.17 ft
Step-by-step explanation:
Since the angle of depression of the sighting equals the angle of elevation of the lighthouse from the boat, using trigonometric ratios,
tanθ = x/d where θ = angle of sighting, x = height of lighthouse =55 ft and d = distance of boat from lighthouse at sighting
So, d = x/tanθ
when θ = 8.1°, for the first sighting,
d₁ = 55/tan8.1 = 386.45 ft
when θ = 25.7°, for the second sighting,
d₂ = 55/tan8.1 = 114.28 ft
The distance the boat traveled between the two sightings is thus d₁ - d₂ = 386.45 ft - 114.28 ft = 272.17 ft