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
Doss [256]
3 years ago
6

A team of 17 softball players need to choose three players to refill the water cooler. How many different ways are there to sele

ct 3 players?
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
5 0
<h3>Answer: 680 different combinations</h3>

=======================================================

Explanation:

If order mattered, then we'd have 17*16*15 = 4080 different permutations. Notice how I started with 17 and counted down 1 at a a time until I had 3 slots to fill. We count down by 1 because each time we pick someone, we can't pick them again.

So we have 4080 different ways to pick 3 people if order mattered. But again order doesn't matter. All that counts is the group itself rather than the individual or how they rank. There are 3*2*1 = 6 ways to order any group of three people, which means there are 4080/6 = 680 different combinations possible.

An alternative is to use the nCr formula with n = 17 and r = 3. That formula is

_n C _r = \frac{n!}{r!*(n-r)!}

where the exclamation marks indicate factorials

You might be interested in
Hector is competing in a 42 mile bicycle race, he has already completed 18 miles of the race ad is traveling at a constant speed
kkurt [141]
Time it took Hector to complete 18 miles is given by 18 / 12 = 1.5 hours.

Let the time when Wanda will catch up to Hector be t, then, the distance covered by Hector at the time they meet is 18 + 12t and the distance covered by Wanda at the time they meet is 16t.

Then, 18 + 12t = 16t
16t - 12t = 18
4t = 18
t = 18 / 4 = 4.5

Therefore, Wanda will catch up with Hector after 4.5 hours.
7 0
3 years ago
<img src="https://tex.z-dn.net/?f=4%28a%20%2B%202%20%29%20-%202%20%28a%20-%203%29" id="TexFormula1" title="4(a + 2 ) - 2 (a - 3)
satela [25.4K]

Answer:

\large\boxed{2a+14}

Step-by-step explanation:

4(a + 2 ) - 2 (a - 3)\qquad\text{use distributive property:}\ a(b+c)=ab+ac\\\\=4a+8-2a-(-6)\qquad\text{combine like terms}\\\\=(4a-2a)+(8+6)\\\\=2a+14

5 0
2 years ago
PLEASE HELP! MIDDLE SCHOOL MATH! The dot plot below shows the number of baskets made by Elena over 12 practice sessions. What is
aleksklad [387]

Answer:

I suck at math so sorry

8 0
2 years ago
Read 2 more answers
A clock has a face with a radius of 11.5 centimeters. What is the approximate circumference of the clock?
antiseptic1488 [7]
C = 2 pi r
C = 2 x 3.14 x 11.5
C = 72.22
answer is <span>
A. 72.22 cm</span>
6 0
2 years ago
Read 2 more answers
What is 40 = 0.5r <br>solve and write Multiplication equations
Dmitrij [34]
40 = 0.5r
40/0.5 = r 
80 = r 

just divide the number in front of the r so that you can figure it out 
5 0
3 years ago
Read 2 more answers
Other questions:
  • The answer I’m soo confused
    9·1 answer
  • What is the value of the expression below when simplified?<br><br> 4[5(3 − 1)]2 − 23
    13·2 answers
  • Help 12-14 please !!!
    9·1 answer
  • AREA ADDITION AND SUBTRACTION URGENT?
    13·2 answers
  • How do I simplify this ​
    5·2 answers
  • Which of the following correctly expresses the number in scientific notation 645,000,000
    5·1 answer
  • Ok, guys here's the question. PLEASE HELP ME!!
    15·2 answers
  • 3 x 4 x 25 x c = ?<br> c = 16
    14·1 answer
  • Math 1319 chapter 5.1-5.6
    10·1 answer
  • The graph of a function h is shown below.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!