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
Rashid [163]
3 years ago
11

How many ways can a group of 8 students be selected from 9 students?

Mathematics
1 answer:
antoniya [11.8K]3 years ago
7 0
9!/(8!*(9-8)!)=9
or just use a calculator and use the nCr function
You might be interested in
Four friends paid a total of 32 dollars for movie tickets. What is the ratio 32 dollars for4 people written as a unit rate
coldgirl [10]
8 is the ratio for the unit rate
3 0
3 years ago
What is the area of this polygon? <br><br> Pleasee help mee<br><br> I will mark brainliest!
Ira Lisetskai [31]

Answer:

60 squared inches.

Step-by-step explanation:

You can break this polygon into two parts. The rectangle part of the polygon is 55 squared inches. The triangle part is 5 squared inches.

The rectangle:

5(11)=55

The triangle:

2(5)=10\\10/2=5

Therefore, the whole polygon is 60 squared inches.

6 0
3 years ago
The sum of two numbers is 87. if three times the smaller number is subtracted from the larger number the result is seven. find t
Stolb23 [73]
\left \{ {{a+b=87} \atop {a-3b=7}} \right.&#10;&#10;

a-3b=7
a=7+3b

a+b=87
(7+3b)+b=87
7+4b=87
4b=87-7
4b=80
b=20

a=7+3b
a=7+3*20
a=7+60
a=67
5 0
3 years ago
How do you add fractions and whole numbers together? For example 1/4+2
grigory [225]

Answer:

2.25 or 2 1/4

Step-by-step explanation:

Easy. you add them like regular numbers. 1/4 + 2 = 0.25 + 2 =2.25 and/or 2 1/4

8 0
2 years ago
What is the probability of rolling a pair of dice and not rolling the same number?
Aleksandr [31]

Answer:

5/6

Step-by-step explanation:

The "first" dice can land on any number, so there are 6 choices. The "second" can not be the same number as the first one. So there are 5 choices. We multiply to get 6*5=30 ways to roll a different number. There are 6*6 total ways so the probability is 30/36 which simplifies to 5/6.

4 0
2 years ago
Other questions:
  • Factor polynomial
    14·1 answer
  • A bag of marbles contains 6 bluemarbles, 2 yeloow marbles, 4 red marbles, and 1 green marble. What is the [robability of reachin
    5·1 answer
  • How do you write 5,901,452 in word form
    13·2 answers
  • On the first day of baseball tournament Jessie scored 2 runs. On the second day, 4 runs. On the third day, 6 runs. If this patte
    9·1 answer
  • i am a 2 dimensional shape that has four sides. I have four 90 degree angles.i have two sets of parallel lines. i also have two
    14·2 answers
  • Three consecutive integers have a sum of 81 . Find the integers.
    11·1 answer
  • What are all the values of r where the function.....<br> Please help ASAP!!!
    5·1 answer
  • A 41 gram sample of a substance that's used to detect explosives has a k-value of 0.1392. Find the substance's half life, in day
    13·1 answer
  • What is the surface area of the net? *inches squared*
    15·1 answer
  • A phone company advertises a new plan in which the customer pays a fixed amount
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!