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
vovangra [49]
3 years ago
15

If the police have 9 suspects how many different ways can they select 5 for a lineup

Mathematics
1 answer:
kow [346]3 years ago
4 0
Assuming the order does not matter, you want the number of combinations of 9 things taken 5 at a time.  The combinations can be shown as C(9,5), 9C5.

C(9, 5) =
9/5(9-5) = 
9*8*7*6*5 / 5*4 

The 5 terms cancel. 

9*8*7*6 / 4*3*2 = 
9*7*2 = 
126

The above change is because 4*2 cancels the 8 in the numerator and 6/3 = 2
Therefore, the solution is 126. 
You might be interested in
In an election, Candidate A received 75 votes and candidate B received 25 votes, after the first 100 votes were counted. Assume
enot [183]

Answer:

Candidate receives 2250 votes

Step-by-step explanation:

Ratio of votes A : B = 75 : 25  = 3 : 1

3 : 1 = x : 750

Product of means = Product of extremes

1 *x = 3*750

  x = 3 *750

     = 2250

3 0
3 years ago
Pietro buys 20 candy bars for $6 he plans to sell all 20 candy bars in 1 day he need to make a profit of $10 per day to meet his
iren [92.7K]
He would have to charge 80 cents per candy bar!
5 0
3 years ago
The movie club is having a new member sale, so Mindy signs up. The equation -0.4x + 0.05y - 1.25 = 0 relates y, the total cost,
Wewaii [24]

Answer:

Y intercept : ( 0 , 25 )

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
You believe that eating an apple a day is healthy and want to design an experiment to find out. You have available 40 volunteers
Gwar [14]

The best design for this experiment would be a repeated measures design. This is ideal to determine if eating an apple makes you healthy.

<h3>What is an experimental design?</h3>

An experimental design refers to the general structure of an experiment including how people are distributed into the control and experimental group to test a specific phenomenon.

<h3>What is a repeated measures design?</h3>

In a repeated measures design all participants are both parts of the control group, in this case, people who do not eat apples, and the experimental group, or people who eat apples.

<h3>What does this design imply?</h3>

In the case of determining if eating an apple every day, this design implies:

  • All participants will be asked to not eat apples every day for a specific period such as one or two months, and health levels will be measured during this time.
  • After the first step, all participants will be asked to eat an apple every day during the period, and their health will be measured.
  • The researcher can compare the results of each participant, which is more accurate than comparing one participant to another.

Learn more about experiments in: brainly.com/question/1452319

7 0
3 years ago
The sum of two consecutive integers is -239 find the two integers​
xenn [34]

Answer:

The two consecutive integers are -119 and -120

Step-by-step explanation:

As we know that these two integers are consecutive, that means that they will have a difference of 1. This means that we can find the two integers by adding 1 to the sum of -239 and then dividing it by two

1-239=-238\\\frac{-238}{2} =-119\\-119-1=-120

5 0
4 years ago
Other questions:
  • An example of coplaner points
    6·1 answer
  • What is the domain of the function h(x)=4log_5(x−6)+1 ? Enter your answer in the box.
    13·2 answers
  • A certain circle can be represented by the following equation. x2 + y2 + 10x + 12y + 25 = 0. What is the center of this circle?
    10·2 answers
  • There are 6 chemical elements represented by Li, Na, Mg, Rb, Cs, and Fr that
    13·2 answers
  • Which of the following expressions represents the sum of a number and three is divided by two? 2 ÷ x + 3 2 ÷ (x + 3) (x + 3) ÷ 2
    11·2 answers
  • Please help ASAP!!! <br><br> What is the sum of this series?
    15·1 answer
  • ITS NOT THAT HARD 20 POINTS PLSSSSSSSS Help I had to sacrifice 15 points bc no one would answer my question pls answer!!!!!!!!!!
    14·1 answer
  • Write an inequality for the sentence below and then solve and check it. The sum of w and nine is less than 18
    5·1 answer
  • Y = -x + 10 and y = 2x + 4
    5·1 answer
  • Robert owns two dogs. Each day, one dog eats
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!