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
Vinvika [58]
3 years ago
8

Out of 10 students, 2 will be chosen to ride in a car instead of a van on an upcoming field trip. Which statement best describes

this situation?
A. There are 10P2 = 90 ways the students can be chosen to ride in the car because the order in which the students are chosen matters.

B. There are 10C2 = 45 ways the students can be chosen to ride in the car because the order in which the students are chosen matters.

C. There are 10P2 = 90 ways the students can be chosen to ride in the car because the order in which the students are chosen doesn’t matter.

D. There are 10C2 = 45 ways the students can be chosen to ride in the car because the order in which the students are chosen doesn’t matter.
Mathematics
1 answer:
Rudiy273 years ago
8 0

Answer:

D

Step-by-step explanation:

Firstly, since it is a selection question, we shall be using a combination approach.

So here we are trying to select the best answer that describes that 2 out of 10 students are selected.

Let’s consider the scenario below;

selecting r out of n can be resolved using the combination nCr

= n!/(n-r)!r!

Now in this case, our n = 10 and r = 2.

Thus, 10C2, we have ;

10!/(10-2)!2! = 10!/8!2! = (10 * 9 * 8!)/8!2! = (10 *9)/2! = 90/2 = 45

Thus, 10C2 = 45

Here, the order of selection does not matter as we can select in random fashion. This makes option D correct

You might be interested in
Find the rule of f(3)
ValentinkaMS [17]

Answer:

-6 (6) ^3 - 6

-1302

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Sum term product factor quotients coefficients for 5x+12
Svetllana [295]
I tried I hope this helps in any kind of way

4 0
3 years ago
6. Are these triangles similar? If they are, name the postulate or theorem that proves they are.
TiliK225 [7]
C by AA- bc 180 degrees in a triangle
3 0
3 years ago
What is the probability of pulling out a diamond card out of a standard deck and rolling a 5?
Sliva [168]

Answer:

1/24

Step-by-step explanation:

The probability of drawing a diamond is 1/4 and the prob. of rolling a 5 is 1/6. Multiply the two together

3 0
3 years ago
Read 2 more answers
Notebooks cost $1.20 each. This weekend they will be $.80 What percentage is the sale?
geniusboy [140]
The sale is 33% off notebooks. This can be found by first subtracting .8 from 1.2

1.2-.8=.4    Now divide .4 by 1.2 to get your answer.

\frac{.4}{1.2}=.33

.33=33%

You can also solve this mentally because if you know your basic multiplication tables, 3*4=12 and so \frac{2}{3} of 12 would equal 8.

Does you understand it now?

6 0
3 years ago
Other questions:
  • Rowan has 3 pieces of yarn as described below
    9·2 answers
  • Emily designed a robot that could climb down steps. She drew a graph to show the results from a test of her new robot. The graph
    10·2 answers
  • I need help on my makeup work numbers 4-6
    15·2 answers
  • 6. Tori and Terry spend the day at the mall. At the end of the ey, se two added up their
    8·1 answer
  • Referred to the diagram what is the scale factor used to create the new shape.
    15·1 answer
  • Solve each linear equation for x. A)-12x+9=-5x
    14·1 answer
  • Danny has an unknown number of used cars at his
    10·2 answers
  • PLEASE HELP!!<br><br><br>I will give brainliest!
    12·1 answer
  • WILL GIVE BRAINLYEST!!!!!
    12·1 answer
  • Calculate the area of each circle and show work
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!