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Alona [7]
3 years ago
6

A study by a reputable research organization found that when presented with prints from the same​ individual, a fingerprint expe

rt will correctly identify the match ​% of the time. In​ contrast, a novice will correctly identify the match ​% of the time. Consider a sample of different pairs of​ fingerprints, where each pair is a match. Complete parts a and b below. a. What is the probability that an expert will correctly identify the match in all pairs of​ fingerprints? The probability is nothing. ​(Round to four decimal places as​ needed.)
Mathematics
1 answer:
Degger [83]3 years ago
8 0

Answer:

0.5578

Step-by-step explanation:

Fingerprint correctly match 92 % of the time.

A novice that will correctly identify a match 75​% the time.

Each of the attempts of matching a fingerprint with the individual is independent.

The number of pairs are 7.

a). So the probability that the expert will identify every pair correctly is

= 0.92 x 0.92 x 0.92 x 0.92 x 0.92 x 0.92 x 0.92= 0.927 = 0.5578

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Select the correct answer.
Pavlova-9 [17]

Answer:

\log_{3} ({5\sqrt{x}} * y ) = \log_{3}({5) + \log_{3}(\sqrt{x}) +\log_{3}( y )

Step-by-step explanation:

Given

\log_{3} ({5\sqrt{x}} * y )

Required

Write as sum or difference

Using addition law of logarithm, the equation becomes:

\log_{3} ({5\sqrt{x}} * y ) = \log_{3}({5\sqrt{x}) +\log_{3}( y )

Expand

\log_{3} ({5\sqrt{x}} * y ) = \log_{3}({5 * \sqrt{x}) +\log_{3}( y )

Apply addition law

\log_{3} ({5\sqrt{x}} * y ) = \log_{3}({5) + \log_{3}(\sqrt{x}) +\log_{3}( y )

4 0
3 years ago
Please please please please
Alexeev081 [22]

Answer:

5cm wide, 10cm long.

Step-by-step explanation:

I came to this answer by looking for common factors between 50 and 5, and I found 10.

5cm + 5cm = 10cm, so it works.

To confirm this, I multiplied 5 and 10 and got 50cm (squared) which works.

3 0
3 years ago
Find the 7th term in the expansion of (3x^2+4)^11​
stiks02 [169]

Answer:

6.9261307e+23

Step-by-step explanation:

7 0
3 years ago
Write 89 tenths in standard form *
Jobisdone [24]

89 tenths......................

4 0
3 years ago
Read 2 more answers
You operate a gaming website, www.mudbeast.net, where users must pay a small fee to log on. When you charged $4 the demand was 5
sertanlavr [38]
A) Demand function

price (x)          demand (D(x))

4                      540

3.50                  810

D - 540          810 - 540
----------- =  -----------------
x - 4               3.50 - 4

D - 540
----------- = - 540
x - 4

D - 540 = - 540(x - 4)

D = -540x + 2160 + 540

D = 2700 - 540x

D(x) = 2700 - 540x

Revenue function, R(x)

R(x) = price * demand = x * D(x)

R(x) = x* (2700 - 540x) = 2700x - 540x^2

b) Profit, P(x)

profit = revenue - cost

P(x) = R(x) - 30

P(x) = [2700x - 540x^2] - 30

P(x) = 2700x - 540x^2 - 30

Largest possible profit => vertex of the parabola

vertex of 2700x - 540x^2 - 30

When you calculate the vertex you find x = 5 /2

=> P(x) = 3345

Answer: you should charge a log-on fee of $2.5 to have the largest profit, which is $3345.




5 0
3 years ago
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