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
DanielleElmas [232]
2 years ago
8

Mr. Jefferson has 20 students in his class. He wants to send 4 of these students to pick up books for the class. How many combin

ations of 4 students can he choose? 80 5 4845 116,280
Mathematics
2 answers:
tino4ka555 [31]2 years ago
8 0

The answer would be 80 because 20 x 4 = 80

Answer: 80

Minchanka [31]2 years ago
3 0

Answer:

4845 combinations

Step-by-step explanation:

Whenever there is a selection of some elements from a certain group, there are several ways to do so. There are different combinations from the group which can be selected. The concept of combination means that there are certain number of elements to be selected from the group and there is no importance given to the order of the selection. The total number of students are 20, and 4 out of them have to be selected. It can be clearly seen that the order of selection does not matter, therefore the formula to be used is:

Combinations = 20C4 = (20*19*18*17)/(4*3*2*1) = 4845.

So the correct answer is 4845 combinations!!!

You might be interested in
A restaurant manager can spend at most $600 a day for operating costs and payroll. It costs $100 each day to operate the bank an
navik [9.2K]

Option A

The restaurant Manager can afford at most 10 employees for the day

<em><u>Solution:</u></em>

Given that restaurant manager can spend at most $600 a day for operating costs and payroll

It costs $100 each day to operate the bank and $50 dollars a day for each employee

The given inequality is:

50x + 100\leq 600

Where , "x" is the number of employees per day

Let us solve the inequality for "x"

50x + 100\leq 600

Add -100 on both sides of inequality

50x + 100 - 100\leq 600 - 100\\\\50x\leq 500

Divide by 50 on both sides of inequality

\frac{50x}{50}\leq \frac{500}{50}\\\\x\leq 10

Hence the restaurant Manager can afford at most 10 employees for the day

Thus option A is correct

6 0
3 years ago
Three ways to make 26
Alik [6]

Answer:

13 times 2

52 divided by 2

20 plus 6

Step-by-step explanation:

6 0
3 years ago
If I had $500 dollars sent in the mail and then I spent 400 dollars on groceries how much will I have left.
ollegr [7]
You would have 100 dollars left
6 0
3 years ago
Read 2 more answers
DE is tangent to Circle C at point D. <br><br> What is the measure of Enter your answer in the box.
creativ13 [48]

Answer:

39°

Step-by-step explanation:

A radius of a circle (segment CD) drawn to the point of tangency (D) intersects the tangent (line DE) at a 90-deg angle.

That makes m<D = 90.

m<D + m<C + m<E = 180

90 + 51 + m<E = 180

m<E = 39

5 0
3 years ago
What is the area of this pentagon?
andrezito [222]

Answer:

56

Step-by-step explanation:

I thibk

4 0
3 years ago
Read 2 more answers
Other questions:
  • 15 POINTS
    15·1 answer
  • For what value of x is the rational expression below undefined? x+8/x^2 -2x-24
    8·2 answers
  • ANSWER PLZ ASAP!!!!!!!!!!!!!!
    8·2 answers
  • If the prism has 3 layers, what would the volume of the
    10·1 answer
  • A person at a restaurant gets a 35% discount on her total bill. If her bill was $120, how much is her discount? How much is the
    10·1 answer
  • I need help I don’t understand
    12·1 answer
  • Plz help well mark brainliest if you are correct!!…
    6·1 answer
  • Kiran’s backpack weighs 3 pounds less than Clare’s backpack. Clare’s backpack weighs 14 pounds. How much does Kiran’s backpack w
    15·1 answer
  • This trapezoid-based right prism has a volume of 30 cm 3 30 cm 3 30, start text, space, c, m, end text, cubed.What is the area o
    13·1 answer
  • Identify the type of sampling method used.A trucking company places their office phone number on the back of all of their vehicl
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!