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
laila [671]
2 years ago
15

A teacher is choosing 4 students from a class of 30 to represent the class at a science fair. In how many ways can the teacher c

hoose the students?
Mathematics
1 answer:
marin [14]2 years ago
4 0
{30 \choose 4}=\frac{30!}{4!26!}=\frac{27\cdot28\cdot29\cdot30}{2\cdot 3\cdot4}=27\cdot7\cdot29\cdot5=27405
You might be interested in
“Half of a number (n) is at least 22."<br> translate and solve
viktelen [127]

Answer:

n >_44

Step-by-step explanation:

1/2n>_22

(times 2 on both sides)

n >_44

*** >_ is greater than or equal to sign

8 0
2 years ago
Someone help or nah?
cricket20 [7]

Answer:

25

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Derrick is training for a race he wants to run a total of 100 miles over 4 weeks he only runs 16 miles in the first week if he r
Gala2k [10]

Answer:

  28 miles

Step-by-step explanation:

Let w stand for the number of miles Derrick runs each week. Then after 4 weeks of training, he wants the total mileage to be 100 miles.

  16 + 3w = 100

  3w = 84 . . . . . . . subtract 16

  w = 28 . . . . . . . . divide by 3

Derrick will run 28 miles each week to achieve his training goal.

7 0
3 years ago
I don't understand help please :(
Sonbull [250]
This means that 10% of the total number of chickens Cam has is 11. If 10% of a number is 11, 100% of the chickens should be 110.
7 0
2 years ago
What is the answer to 6+2times 5 ????
12345 [234]
6+2=8, right? Okay. Next, all you have to do is take away the equation "6+2". Now what you have is... 8x5. That's easy! 40. This is a very easy problem if you think about it.
3 0
2 years ago
Read 2 more answers
Other questions:
  • Expand the following equation:5x(3-7y)​
    7·2 answers
  • Help with this question, please!! I don't understand!!
    15·2 answers
  • Simplify: 5x - 6y + 4x<br><br> x - 6y<br> 3xy<br> 9x - 6y
    12·2 answers
  • A package has 5 erasers number of packages 6 total number of erasers
    15·2 answers
  • 20 points !! and all make brainliest!!!
    5·1 answer
  • Is 15<img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%7D" id="TexFormula1" title="\sqrt{x}" alt="\sqrt{x}" align="absmiddle" class=
    14·1 answer
  • The solutions to the equation<br>=2x^2+x-1=2are ×= -3/2 or x=<br>​
    13·1 answer
  • 5x−4 = 3x +8<br> i need the steps on how to find x<br> plz, i got a 0 the first time i did it
    5·2 answers
  • 2=m/2-7<br><br><br>M/2 is a fraction btw​
    14·1 answer
  • Which two equations are equivalent to: 3(3x - 2) = 5(2x + 4) 9x - 6 = 10x + 20
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!