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
ra1l [238]
3 years ago
15

a professor must randomly select 4 students to participate in a mock debate. There are 20 students in his class. In how many dif

ferent ways can these students be selected, if the number of selections does not matter?
Mathematics
2 answers:
Feliz [49]3 years ago
6 0
If the order doesn't matter the it's
C(20,4)=\dfrac{20!}{4!16!}=\dfrac{17\cdot18\cdot19\cdot20}{2\cdot3\cdot4}=4845
Grace [21]3 years ago
3 0

Answer:

Different ways can these students be selected = 4845

Step-by-step explanation:

Number of combinations possible from n number of population if r people are selected is ^nC_r

Here n = 20 and r = 4

Different ways can these students be selected = ^{20}C_4

^{20}C_4=\frac{20\times 19\times 18\times 17}{1\times 2\times 3\times 4}=4845

Different ways can these students be selected = 4845

You might be interested in
Need help really badly please help .
Harlamova29_29 [7]

Answer:

sin s = 36 / 42 = 18 / 21 = 6/ 7

sin R = 14 / 42 = 7 / 21 = 1 / 3

cos s = 14 / 42 = 1 / 3

cos R = 36 / 42 = 6 / 7

4 0
2 years ago
00:00
stiks02 [169]

Answer:

i think D

Step-by-step explanation:

5 0
2 years ago
Solve the equation :<br>-3 • ( 2 - x ) + 4 = 2 • ( 1 - 2x) + 3<br>thanks :) ​
kakasveta [241]

Isolate the variable by dividing each side by factors that don't contain the variable.

x  =  1

-6+3x+4=2-4x+3

-8+7x+1=0

7x=7

x=1

4 0
2 years ago
Pls help I don't know how to do this​
AVprozaik [17]

Answer:

Vertex, I believe.

7 0
2 years ago
a metal strip is being installed around a workbench that is 7 feet long and 3 feet wide. find how much stripping is needed
VikaD [51]

Answer:

20 ft.

Step-by-step explanation:

7 ft and 3 ft.

3*2=6

7*2=14

6+14=20.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Alex bar and Carl are brothers Alex is the oldest and Carl is the youngest the some of the ages of the three brothers is 42 Alex
    5·1 answer
  • Reduce the rate 80 miles per 4 hours to its unit rate and write the miles portion of your answer in the space provided.
    13·1 answer
  • This is a literal equation.
    8·2 answers
  • (4,?) is on the line below.  Find the other half of the coordinate. y= 2 7 x−3 y=27x-3
    11·1 answer
  • Where would I split this I will give brainliest
    9·1 answer
  • Please help this is due in like 20 minutes
    15·1 answer
  • Given triangles ABC and DEF. What is the simplest transformation that could produce triangle DEF from triangle ABC?
    6·2 answers
  • Jordyn had an 8-ounce glass of water. She drank 4.7 ounces and poured another 3.5 ounces into her glass. Which expression repres
    9·1 answer
  • A rectangular prism has a volume of 360 in3. If the height measures 6in. which base measurements could the prism have?
    13·1 answer
  • Help plz!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!