The answer is length AD is 3cm
Answer:
L = 15, W = 8
Step-by-step explanation:
Perimeter = 2(L + W)
P = 40
L = 2W - 1
40 = 2((2W-1) + W)
40 = 4W - 2 + 2W
40 = 6W - 2
42 = 6W
W = 8
Since L = 2W - 1
L = 2(8) - 1
L = 15
It looks right, but I could be wrong
Answer:
It would cost <u>$600</u> for an advertisement of 
of a page.
Step-by-step explanation:
Given:
To place an ad in the Harrisonburg newspaper it cost $100 for each 1/8 of a page used.
Now, to find the cost of an advertisement 3/4 of a page.
So, to get the cost we use unitary method:
<em>If, </em>
<em> of a page used cost = $100.</em>
<em>Then, 1 page used cost = </em>
<em> = </em>
<em />
<em>Thus, </em><em> of a page used cost</em> = 
Therefore, it would cost $600 for an advertisement of of a page.
The described situation represents a normal distribution.
For a normally distributed distribution, P(X < x) = P(z < (x - mean) / standard deviation))
P(x > 100) = 1 - P(z =< 100) = 1 - P(z < (100 - 80) / 12.12) = 1 - P(z < 1.6502) = 1 - 0.95055 = 0.04945 = 4.9%
Therefore, the required percentage of the customers expected to get free gifts is 4.9%.
