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
fiasKO [112]
3 years ago
11

A combination lock has numbers 0-49 on it. How many different 3-digit lock

Mathematics
1 answer:
Harman [31]3 years ago
3 0

Answer:

19,600

Step-by-step explanation:

0-49=50 numbers

n=50

r=3

C(n,r)=n!/(r!(n-r)!)

=50!/(47!)(3!)

C(n,r)=C(50,3)

=50!/(3!(50−3)!)

= 19600

You might be interested in
What is the surface area of the pyramid in square inches?
eduard
736 square inches.





El problema de las palabras es la de la vida de los que no lo saben y lo hacen en el mismo sentido pero
3 0
3 years ago
Here are two steps from the derivation of the quadratic formula
Maru [420]

Answer:

C

Step-by-step explanation:

Completing the square means

adding ( half the coefficient of the x- term )² to both sides, that is

( \frac{b}{2a} )² is added to both sides

5 0
3 years ago
Read 2 more answers
Question 1 help! Please!
Brut [27]

Answer: D

Step-by-step explanation:

6 0
3 years ago
The ratio of the number of Mays necklaces to the number of Helen's necklace is 25:9. May has 100 necklaces. How many necklaces d
likoan [24]

Answer:

36

Step-by-step explanation:

25:9

25*4 = 100

9*4 = 36

6 0
3 years ago
Use the distributive property to write each expression then evaluate it 7(7-9)
valkas [14]

Answer:

49-63

Step-by-step explanation:

1. (7·7) - (7·9)

2. (49) - (63)

3. 49 - 63 = -14

Hoped I helped!! :)

8 0
3 years ago
Read 2 more answers
Other questions:
  • You draw two cards from a standard deck of 52 cards. What is the probability of drawing a face card and then an ace consecutivel
    9·2 answers
  • Alice invests $5000 in two certificates of deposit; the interest on the first certificate is 4%, and the interest on the second
    13·1 answer
  • Zachary and Omari starts working at 8 am Omari takes a break every 3 hours when will they take a break??
    14·1 answer
  • 1/2 (x + 3) = -5x + (40 divided by 1)
    12·1 answer
  • I don’t know if it’s true or false
    14·1 answer
  • 17. Determine which point lies in the solution of the system: y< -1x+2, y ≥ 3x - 4
    13·2 answers
  • Do these three segments make a right triangle? 16m, 30m, and 34m
    13·2 answers
  • How do you solve this equation step-by-step? (below)<br><br><br> 4a + 8 - 2a - 3 = 45
    7·2 answers
  • Help please I’m struggling badly because Im sooo bad at math
    10·1 answer
  • Amanda needs to cut a board to use for a project. The board is 10 feet long. She first has to cut off 1 3/4 feet from one end of
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!