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ahrayia [7]
3 years ago
9

The probability that a lab specimen contains high levels of contamination is 0.15. A group of 4 independent samples are checked.

Round your answers to four decimal places (e.g. 98.7654). (a) What is the probability that none contain high levels of contamination
Mathematics
1 answer:
Lady bird [3.3K]3 years ago
5 0

Answer:

0.5220

Step-by-step explanation:

Since the probability of contamination is 0.15, the probability of no contamination is 1 - 0.15 = 0.85

The probability that they are all contaminated will be 0.85 * 0.85 0.85 * 0.85 = 0.52200625

This is 0.5220 to four decimal

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Harry created a canvas painting on a square canvas. He then placed an order for a new rectangular canvas. The side length of the
sveta [45]

Answer:

1.x^2

2.x+8

3.x

4. 8x

Step-by-step explanation:

Length of old is x inches.

Because it is square we have that area of the old canvas : x^2

When we read : width of new is increased by 8 so : x+8

Length is x.

The difference of areas:

Old canvas : A1=x^2

New canvas : A2=x(x+8)=x^2+8x

Now we can find A2-A1:

x^2+8x-x^2=8x

8 0
3 years ago
If average of m numbers is n^2 and average of n numbers is m^2 then average of m+n numbers is 
kkurt [141]
The sum of the m numbers divided by m (which is the average) equals n^2. Then, the sum of the m numbers equals mn^2.
The sum of the n numbers divided by n (which is the average) equals m^2. Then, the sum of the n numbers equals nm^2.
The average of m+n numbers which is the sum of the m numbers plus the sum of the n numbers divided by (m+n) equals (mn^2+nm^2)/(m+n). This is mn(n+m)/(m+n). Then the factor (m+n) can be ruled out and the result is mn.
4 0
4 years ago
200 miles divided by 8​
yulyashka [42]

Answer:

25

200 divided by 8 is 25.

Step-by-step explanation:

6 0
3 years ago
Simplify each expression.<br><br> 5x+ 3/4 +2x− 1/2
suter [353]

Answer:

7x+1/4

Step-by-step explanation:

5x+3/4+2x+-1/2

Combine Like Terms:

5x+3/4+2x+-1/2

(5x+2x)+(3/4+-1/2)

7x+1/4

Hope this helps

7 0
3 years ago
Mike had 119 dollars to spend on 6 books. after buying them he had 11 dollars. how much did each book cost ?
deff fn [24]
18 $ Hope I helped
This is how I came to the result..
119-11= 108
108 : 6 = 18 $
8 0
3 years ago
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