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
sleet_krkn [62]
3 years ago
12

How many positive 4-digit integers have only odd digits?

Mathematics
2 answers:
Sav [38]3 years ago
7 0
2,4,6,8 multiply by 3

12345 [234]3 years ago
6 0

Answer:

5^4 = 625

Step-by-step explanation:

There are 5 possible odd digits to choose from:  1,3,5,7,9.

When we chose our first digit, we have 5 choices (the possible odd digits). For every one of those 5 choices, we can chose our second digit in 5 different ways again, then we have 5*5 = 25 ways for choosing our first two digits. We can do the same again, as for every one of the 25 first two digits, we can chose our third digit in 5 different ways (again, the odd numbers). So we multiply it by 5 again. Repeating this one more time, because we have 5 different ways to chose our fourth digit. At the end we will have

5*5*5*5 = 5^4 = 625

This is a commun counting technique.

You might be interested in
What is the definition for compatible numbers
Svetradugi [14.3K]
Numbers in a problem or related numbers that are easy to work with mentally
4 0
3 years ago
John is creating crafts that require 4 2/5 inches of string each. If the string comes in a 50ft spool, how many items can he mak
Serggg [28]

Answer:

Step-by-step explanation:

7 0
3 years ago
Not sure what to do here? Naomi has 50 red beads and white beads. The number of red beads is 1 more than 6 times the number of w
lorasvet [3.4K]
R + w = 50
r = 6w + 1

now we sub ..
6w + 1 + w = 50
7w + 1 = 50
7w = 50 - 1
7w = 49
w = 49/7
w = 7 <== white beads

r = 6w + 1
r = 6(7) + 1
r = 42 + 1
r = 43 <=== red beads
7 0
3 years ago
Solve the equation log^7b&gt;2
ahrayia [7]

Answer:

b > 12.71

Step-by-step explanation:

Here in this question we have to solve the inequality equation given for b (An unknown variable}

Now, the equation is (\log b)^{7} > 2

⇒ \log b > 2^{\frac{1}{7} }

We are taking the base of the log here is 10.

So, 10^{(\log b)} > 10^{2^{\frac{1}{7} } } {Since 10^{\log x} =x and e^{\ln x} = x}

⇒ b > 12.71 (Approximate) (Answer)

3 0
3 years ago
800 is 10 times as much as what
Margaret [11]
800 is 10 times as much as 80
8 0
3 years ago
Other questions:
  • Solve for n: -4 (3n+3) = 5 (-2-6n) -2
    13·2 answers
  • What is 3/5 ÷ 1 1/4?
    11·2 answers
  • Find a:27=6:11, find a​
    12·1 answer
  • Yeah so 5mi/h =?km/h​
    15·1 answer
  • Using number 3,7,3, and 5 make the greatest 4 digit number and the least 4 digit number..use each digit once
    14·1 answer
  • If cos θ = .62 and if 0&lt;θ&lt;90 what is the approximate value of sin θ to the nearest hundredth
    11·1 answer
  • Evaluate The diagram below.<br> Given: straight lines AD and CE.<br> HELP ASAP‼️‼️
    15·1 answer
  • Hey guys help me out please. Need it now
    9·1 answer
  • Wich expression shows the product of 9 and a number?
    12·1 answer
  • If not able to awnser say it in the comments
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!