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
k0ka [10]
2 years ago
9

How many three-digit positive integers have three different digits?

Mathematics
1 answer:
olganol [36]2 years ago
4 0

648 is the three-digit positive integers have three different digits

According to the statement

we have given that there are three positive digit number are formed with three distinct digits.

And we have to find that the how many words are formed with distinct numbers.

So, to solve this type of problem the Combination formula is best.

Because it provides the all possibilities that from how many ways numbers are formed.

So, from a combination formula

here we take 9 two times because first time when we let a number then remaining numbers are 9.  and second time remaining numbers are also 9 because we let the distinct number but for third number there will be a probability that choosing number will be same.

So, Three digit positive number become from 9*9*8 =648

So, 648 is the three-digit positive integers have three different digits.

Learn more about COMBINATION here brainly.com/question/4658834

#SPJ1

You might be interested in
Please help me with all these.
3241004551 [841]
In the first table, y = 4x. So y is proportional to x.

In the second table, y is not proportional to x.

In the third table, 2y = 3x. So, y is proportional to x.
7 0
3 years ago
Solve the system of linear equations below.
Olegator [25]

Answer:

B. x = 2, y = 6

Step-by-step explanation:

2x + 5y = 34...(1) \\  \\ x + 2y = 14 \\  \therefore \: x = 14 - 2y...(2) \\  \\ from \: equations \: (1) \: and \: (2) \\  \\ 2(14 - 2y) + 5y = 34 \\ \therefore \: 28 - 4y + 5y = 34 \\  \therefore \: 28 + y = 34 \\ \therefore \:  y = 34 - 28 \\  \huge \red{ \boxed{\therefore \:  y = 6}} \\ substituting \: y = 6 \: in \: equation \: (2) \\ x = 14 - 2 \times 6 \\ \therefore \:  x =14 - 12 \\  \huge \purple{ \boxed{\therefore \:  x =2}} \\  \\ \huge \orange{ \boxed{ \therefore \:  x  = 2, \:  \: y = 6}} \\

5 0
3 years ago
Read 2 more answers
Someone help me please!<br><br> Solve the equation 1/4t + -6 = -4
Rom4ik [11]

Answer:

The answer is t=8

Step-by-step explanation:

simplify both sides or the equation, then isolate the variables

8 0
2 years ago
Read 2 more answers
Hello! Anyone able to help me with question 3 + explanation too? Thanks!
taurus [48]

Answer:

2 or 12

Step-by-step explanation:

The answer that we will use this equation 1/t1 +1/t2=1/ttotal

where t1 is the time of smaller pipe while t2 is the of the larger pipe

Given t total =4 while t2 is equal to t2=t1-6

So know you can solve the problem by changing it into (2t1-6)/(t1*(t1-6))=1/4

8( t1-3)=(t1^2-6t1)

t1^2-14t1+24=0

t1=2 or 12

5 0
3 years ago
Read 2 more answers
Based on the function h(t), what will be the account value five years after the account is opened?
bija089 [108]

Answer:

Option B

Step-by-step explanation:

f(t) = 5000

g(t) = 250t

h(t) = f(t) + g(t) = 5000 + 250t

After 5 years, the amount of money in the account is:

h(t = 5) = 5000 + 250(5) = 5000 + 1250 = 6250$

5 0
3 years ago
Other questions:
  • How many times does 16 go in 41
    10·1 answer
  • Select all expressions that equal -6-(-2)
    9·2 answers
  • Select the equation that is true for all values of x?
    5·1 answer
  • 14tx=46;x=32 what's the answer?​
    8·2 answers
  • A game is played as follows: a die numbered 1 to 6 is rolled. If the number 1 comes up, you get nothing. If the number 2, 3, or
    14·1 answer
  • The right-hand endpoint of the kth subinterval is denoted x∗k. What is x∗k (in terms of k and n)? x∗k =_________.
    9·1 answer
  • The graph of 15x + 7y = 15 is shown on the grid. Which ordered pair is in the solution set of 15x + 7y ≥ 15?
    14·1 answer
  • research to find foods that are made using microorganisms. Choose one such food. Write a paragraph explaining how microorganisms
    7·1 answer
  • Which expression is equivalent
    15·1 answer
  • Rearranging formula
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!