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
svp [43]
3 years ago
13

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 order of selection does not matter?
Mathematics
2 answers:
lina2011 [118]3 years ago
4 0

There are 4845 different ways he could chose the students.

Aneli [31]3 years ago
3 0
The equation we used in this problem is the combination of probability. The formula used is "nCr<span> = </span>n<span>! / </span>r! * (n<span> - </span>r<span>)!" where, n is all 20 students and r is the 4 students. Substituting the numbers we get 4845 ways.</span>
You might be interested in
The 7th-grade class took a survey on their favorite ice cream. 58 people said they prefer vanilla, while 28 people said they pre
MA_775_DIABLO [31]
Since 58 for vanilla and 28 for chocolate
The ratio would be 28:58
You can simplify it even further
to 14:29
6 0
3 years ago
The length of a rectangle is twice its width. if the perimeter of the rectangle is 36 cm , find its area.
Brut [27]
L = Length
W = Width

L x W = area
Length = 2w

Lets find the width by solving for w.
2w + w = 36 
3w = 36
3w/3 = 36 / 3 
w = 12

So
L = 2 x 12 = 24
W = 12
L X W = area
24 x 12 = 288 cm^2

6 0
3 years ago
Mrs. Daly's reading classes were surveyed about their reading preferences. The data is summarized in the table below.
geniusboy [140]
Count the total number of students who prefer fiction novels: In 9th grade there are 35, in 10th grade there are 52, so there are 87 students who prefer fictions. The proportion of 10th grade students out of these 87 students is 52/87=0.60 approximately.
8 0
3 years ago
Read 2 more answers
The volume of a cylinder is 628 cm3. Find the radius of the base if the cylinder
kirza4 [7]
Radius is 5 cm. is the answer

8 0
3 years ago
What values of a and b make the equation true? StartRoot 648 EndRoot = StartRoot 2 Superscript a Baseline times 3 Superscript b
kramer

Option C: a=3, b=4 is the value of a and b

Explanation:

Given that the expression \sqrt{648}=\sqrt{2^a\times3^b}

We need to determine the value of a and b

Let us consider the term \sqrt{648} and take the prime factorization of the term 648

Thus, we have,

648 divides by 2,

648=2 \cdot 324

324 divides by 2,

648=2 \cdot 2 \cdot 162

162 divides by 2,

648=2 \cdot 2 \cdot 2 \cdot 81

81 divides by 3,

648=2 \cdot 2 \cdot 2 \cdot 3 \cdot 27

27 divides by 3,

648=2 \cdot 2 \cdot 2 \cdot 3 \cdot 3 \cdot 9

9 divides by 3,

648=2 \cdot 2 \cdot 2 \cdot 3 \cdot 3 \cdot 3 \cdot 3

Thus, we have,

\sqrt{648}=\sqrt{2^{3} \cdot 3^{4}}

Therefore, equating the powers of 2 and 3, we get,

a=3, b=4

Hence, the value of a and b is 3 and 4

Thus, Option C is the correct answer.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Natalie worked during the summer for 12 weeks at an amusement park. She earned a salary and put 30% of her earnings into savings
    13·1 answer
  • Enter your answer and show all the steps that you use to solve this problem in the space provided
    15·1 answer
  • X=y2 is this equation a function?​
    8·2 answers
  • It will take an hour for plane A to meet plane B which is flying in the opposite direction. If, in 45 minutes, the distance betw
    12·2 answers
  • Please helpoppplllll mei need to complete this I will give brainly
    9·1 answer
  • Convert the following: Degrees to Radius <br><br> 75 degrees
    15·1 answer
  • Ryan wrote a number on his paper. His number rounds to 350 when rounded to the nearest ten. His number rounds to 300 when rounde
    15·1 answer
  • O
    12·1 answer
  • Find the missing side of each triangle. 8 km and 16 km
    6·1 answer
  • The steps to derive the quadratic formula are shown below:
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!