1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
grigory [225]
2 years ago
13

On a hospital floor, 16 patients have a disease with a mortality rate of 0.1. Find the probability that two of them die. Round t

o three decimal places
Mathematics
1 answer:
matrenka [14]2 years ago
6 0

Answer:

The probability that two of them

die is 0.257

Step-by-step explanation:

From the question, we have that the mortality rate is 0.1

So the probability that they will survive is 1-0.1 = 0.9

Now, we want to check that two will die

We are going you use the Bernoulli approximation of the Binomial theorem as follows

= nCr * p^n * q^(n-r)

where n = 16

r = 2

P = 0.1

q = 0.9

Substituting these values;

14 C 2 * 0.1^2 * 0.9^12

= 0.257

You might be interested in
The perimeter of a rectangle is 34 units. Its width is 6.5 point, 5 units.
12345 [234]
<h3><u>Question:</u></h3>

The perimeter of a rectangle is 34 units. Its width W is 6.5 units.

Write an equation to represent the perimeter in terms of the length L, and find the value of L

<h3><u>Answer:</u></h3>

The length of rectangle is 10.5 units

<h3><u>Solution:</u></h3>

Given that,

Perimeter of rectangle = 34 units

Width of rectangle = 6.5 units

Let "L" be the length of rectangle

<em><u>The perimeter of rectangle is given by formula:</u></em>

Perimeter = 2(length + width)

<em><u>Substituting the values we get,</u></em>

34 = 2(L + 6.5)

Thus the equation is found

<em><u>Solve for "L"</u></em>

L + 6.5 = \frac{34}{2}\\\\L + 6.5 = 17\\\\L = 17 - 6.5\\\\L =10.5

Thus length of rectangle is 10.5 units

6 0
3 years ago
Look at ΔABC and its 90° rotation.<br>  <br> If AB is 8 inches long, what is the length of A'B' ?
chubhunter [2.5K]

Because the triangle is only rotated, AB and A'B' would be equal. 8 in.

3 0
3 years ago
Read 2 more answers
1. Find the distance from point P to QS
12345 [234]

Answer:

5.7 units

Step-by-step explanation:

The distance from point P to QS is the distance from point P (1, 1) to the point of interception R(-3, 5).

Use distance formula to calculate distance between P and R:

PR = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

Let,

P (1, 1) = (x_1, y_1)

R(-3, 5) = (x_2, y_2)

Plug in the values into the formula.

PR = \sqrt{(-3 - 1)^2 + (5 - 1)^2}

PR = \sqrt{(-4)^2 + (4)^2}

PR = \sqrt{16 + 16}

PR = \sqrt{32}

PR = 5.7 units (to nearest tenth)

4 0
3 years ago
Malorie can work 10 math problems in 3 minutes.
Slav-nsk [51]
200
You divide 60 by 3 because there are 60 m minutes in 1 hour. You get 20. 
You then multiply 10 by 20 and you get 200. 
Hope this helps! :)
6 0
3 years ago
Read 2 more answers
(HELP ASAP PLEASE)
vlada-n [284]

Answer:

for four copies the cost is $72

Step-by-step explanation:

52 + 5a = 24 + 12a

28 + 5a = 12a

28 = 7a

a = 4

52 + 20 = 72

for four copies the cost is $72

6 0
3 years ago
Other questions:
  • A sequence starts:
    9·1 answer
  • Which of the following are solutions to 2x^2 -8x -90
    7·1 answer
  • Jimmy and John are trying to put a mixture together of blue jelly beans and red jelly beans for a souvenir gift. The blue jelly
    12·1 answer
  • Emma words in a coffee shop where she is paid at the same hourly rate each day. She was paid $71.25 for working 7.5 hours on Mon
    7·1 answer
  • Find the midpoint of the segment between the points (17,1) and (−2,8)
    12·2 answers
  • I got 4.9 and 40 i dont know if im right
    14·1 answer
  • Stretch Your Thinking Ann arranges her marbles in groups, with 8 marbles in each group. She writes the fraction 5/8 to show the
    12·1 answer
  • What is the circumference of circle T
    6·1 answer
  • [8-(-12)]÷(2x-2)-(-8)
    12·1 answer
  • Which number below is a perfect square? 100 90 50 75 ​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!