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
Fiesta28 [93]
1 year ago
6

From a group of 11 people, you randomly select 4 of them. what is the probability that they are the 4 oldest people in the group

?
Mathematics
1 answer:
Andre45 [30]1 year ago
5 0

Answer:

<u>1/ 130 is the probability that they are the 4 oldest people in the group. </u>

Step-by-step explanation:

In the question, we are given; group of 11 people, 4 are selected randomly, find probability they are the 4 oldest people from the group

P(O)= <em>favorable number of outcomes / total number of outcomes </em>

<h3>= 1 / 11C4</h3>

=  11! / (11-4)! 4!

=  7! *4! / 11!

=1/ 130

<em>Therefore, 1 / 130 is the probability that they are the 4 oldest people in the group. </em>

#SPJ4

You might be interested in
Nina goes to the neighborhood store to buy 14 rolls of toilet paper. If she spent $20.02 in all for her purchase, how much does
lilavasa [31]

Answer:

Each roll is $1.43.

Step-by-step explanation:

20.02 ÷ 14 = 1.43.

1.43 × 14 = 20.02.

3 0
3 years ago
A cup of coffee contains about 100 mg of caffeine. Caffeine is metabolized and leaves the body at a continuous rate of about 12%
Mamont248 [21]

Answer:

a. A = C_{0}(1-x)^t\\x: percentage\ of \ caffeine\ metabolized\\

b. \frac{dA}{dt}= -11.25 \frac{mg}{h}

Step-by-step explanation:

First, we need tot find a general expression for the amount of caffeine remaining in the body after certain time. As the problem states that every hour x percent of caffeine leaves the body, we must substract that percentage from the initial quantity of caffeine, by each hour passing. That expression would be:

A= C_{0}(1-x)^t\\t: time \ in \ hours\\x: percentage \ of \ caffeine\ metabolized\\

Then, to find the amount of caffeine metabolized per hour, we need to differentiate the previous equation. Following the differentiation rules we get:

\frac{dA}{dt} =C_{0}(1-x)^t \ln (1-x)\\\frac{dA}{dt} =100*0.88\ln(0.88)\\\frac{dA}{dt} =-11.25 \frac{mg}{h}

The rate is negative as it represents the amount of caffeine leaving the body at certain time.

3 0
3 years ago
What’s 9 * 9 * 9 * 9 as an exponent?
CaHeK987 [17]

Answer:

9^{4}

Step-by-step explanation:

9^{4} means 9*9*9*9

7 0
3 years ago
Read 2 more answers
-12x divided by -4= -27
Eddi Din [679]
-12x/-4= -27
(-4)-12x/-4 it will cancel the 4 but you gotta multiply on the other side by 4 too
now have -12x =108
-12x=108
divide 108 by -12x which x=-9

8 0
3 years ago
Abigail flipped a coin 20 times, and it landed with heads facing up 13 times. What percent of the coin flips landed with heads f
DIA [1.3K]
65% of the coins flipped landed with heads facing up because 13 were faced up out of 20.

Divide:
13/20=0.65=65%

Hope this helped☺☺
5 0
3 years ago
Other questions:
  • In order to solve by completing the square, what value needs to be added to
    6·1 answer
  • Simplify the following expressionn.
    9·2 answers
  • Find two consecutive integers whose product is 50
    7·1 answer
  • Is (2,4) a solution of 2x - 7y &lt; -10
    12·2 answers
  • I need help please ASAP
    8·1 answer
  • 6(q − 87) = 36 what does q equal?
    6·1 answer
  • TWENTY NINE POINTS AND BRAINLIEST IF YOU CAN ANSWER THIS!!! The number of milligrams of medication in Noelle’s body is about wha
    10·1 answer
  • El área cuadrada de un tablero de ajedrez mide 1681 cm².¿Cuál es la medida de cada uno de sus lados?​
    14·1 answer
  • What is the common difference -30,70,170,270
    12·1 answer
  • Determine whether each of the following pairs of angles have equal measures.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!