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
maxonik [38]
2 years ago
10

How many 4-digit odd numbers can you make using the digits 1 to 7 if the numbers must be less than 6000? No digits are repeated.

Mathematics
1 answer:
bixtya [17]2 years ago
6 0

Answer:

Step-by-step explanation:he first digit must be a 6, 7, or 8, because the number has to be bigger than 6,000.

The last digit must be a 1, 3, 5, or 7, because the number has to be odd.

So if the first digit is 6 or 8, there are 4 odd-number options for the last digit. If the first digit is a 7, then there are only 3 options for the last digit, as 7 can’t be used twice.

The other two digits can be anything that’s not already used. So for each first-and-last combination of digits mentioned above, there will be six options available for one of the middle digits, and then for each of those 3-digit combinations, five options will be available for the final remaining digit.

At this point, we have everything we need to express this as an equation:

x = (2 x 4 + 1 x 3) x 6 x 5

And then we can simplify and solve:

x = (8 + 3) x 30

x = 11 x 30

x = 330

You might be interested in
What is the meaning of PEMDAS
Naily [24]
PEMDAS is the order of operations....it is the order u solve equations.
P = parenthesis....u solve what is in parenthesis first
E = exponents...u solve the exponents next
M = multiply , D = divide....starting from left and going right, u do all the multiplying and dividing
A = addition, S = subtraction...starting from left and going right, u do all the addition and subtraction

6 0
3 years ago
Read 2 more answers
Need help with mathematics
vredina [299]

ABC is congruent to C-MNP

-Steel jelly


3 0
3 years ago
Answer this correctly I’ll give brainalist + 10 points
Ganezh [65]

the sum of supplementary angles is 180 degree

therefore

x +2x = 180°

3x = 180

X = 180/3 = 60°

the value of X is 60°

5 0
2 years ago
The sales tax rate in the state of New York is 8.875. If you buy a pair of shoes for 56.00, how much tax would you pay?
BabaBlast [244]

Answer:

4.97

Step-by-step explanation:

5 0
3 years ago
Matthew bought a suitcase marked down from $90 to $81. What is the discount percentage?
Ksivusya [100]

Answer:

10%

Step-by-step explanation:

Percent change= New-Old |Old|× 100% percent change=81-90 |90| × 100= -9 90×100=-10%

7 0
2 years ago
Other questions:
  • 250= 28.5x + 50.5 where x is the number of years after 2000
    15·1 answer
  • Jose bought 750 bags of peanuts for $375.00. He intends to sell each bag for $0.15 more than he paid. How much should he charge
    5·1 answer
  • PLEASE HELP ME !! Carter has 3 statues of various sizes in his garden. Statue A is one foot taller than statue B. Statue is one-
    11·1 answer
  • The radius of a nitrogen atom is 5.6 × 10-11 meters, and the radius of a beryllium atom is 1.12 × 10-10 meters. Which atom has a
    14·1 answer
  • a photo masured 15cm by 10cm andbis put in a frame that measures 25cm by 20cm calculate the are of the space between the photogr
    7·1 answer
  • Answer please need help with this
    6·1 answer
  • (8x² + 3x + 9) - (6x² + x + 6).
    14·1 answer
  • Would you receive any change if you use $200 to buy a book for $9.90, a new television for $179.97, and a new CD for $9.99? What
    13·1 answer
  • Pls answer first one to get it right and show work will get brainliest thanks :3
    12·1 answer
  • Find the value of the expression:<br> x(x-y)-y(y^2-x) for x=4 and y=2
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!