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
Grace [21]
2 years ago
13

A $\textit{palindrome}$ is a positive integer which reads the same forward and backward, like $12321$ or $4884$. How many $4$-di

git palindromes are there
Mathematics
1 answer:
Norma-Jean [14]2 years ago
4 0

There are 90 4-digit palindromes

<h3>What are palindromes?</h3>

Palindromes are numbers whose reverse is the same as the original number

<h3>How to determine the count of 4-digit palindromes</h3>

Since the digit is 4, then

  • The first digit of the palindrome can be any of 1 to 9 (i.e. 9 digits)
  • The second digit can be any of 0 - 9 (i.e. 10 digits)
  • The third digit must be the second digit (i.e. 1 digit)
  • The last digit must be the first digit (i.e. 1 digit)

So, the total number of digits is:

n =9 * 10 * 1 * 1

Evaluate the product

n =90

Hence, there are 90 4-digit palindromes.

Read more about numbers at:

brainly.com/question/251701

You might be interested in
WhaThe factorization of x2 + 3x – 4 is modeled with algebra tiles.t is the factored form of x2 – x – 2?
Nataly [62]

Answer:

  x^2 -x -2 = (x -2)(x +1)

Step-by-step explanation:

To factor x^2 -x -2, you look for factors of -2 that have a sum of -1:

  -2 = (-1)(2) = (1)(-2) . . . . . the latter pair has a sum of -1

Then these are the constants in the binomial factors:

  x^2 -x -2 = (x +1)(x -2)

_____

<em>Comment on the question</em>

The fact that x^2 +3x -4 is modeled with algebra tiles seems to be irrelevant to the question that is actually asked.

4 0
3 years ago
What is 3√243 expressed in simplest radical form?
Volgvan

Answer:

H is correct

Step-by-step explanation:

(243)^1/3

(3^3 × 3^2)^(1/3)

(3^3)^1/3 × (3^2)^1/3

3×(9)^1/3

3 0
2 years ago
I don't understand this question. Could anyone excplain to me what it wants me to do and what the answer is?
Hatshy [7]
The answer is 18.2
I got the answer by solving it
7 0
3 years ago
Read 2 more answers
URGENT...
MatroZZZ [7]
The center of the dilation is the origin, and the scale factor is 2.

To find the coordinates of the points under this transformation, it is enough to multiply both coordinates of the points X, Y, and Z by 2.

Take a look at the dilation of point Z. To get to Z', both the x and y coordinate of Z must be multiplied by 2.


So, the coordinates are:

X'(8, 0); Y'(6, 4); Z'(4, -4).

8 0
3 years ago
Read 2 more answers
Three prime numbers that can be multiplied to get 825
Leona [35]

Answer:

Prime factorization: 825 = 3 × 5 × 5 × 11, which can be written 825 = 3 × 5² × 11.

Step-by-step explanation:

Hope this helps!

5 0
2 years ago
Read 2 more answers
Other questions:
  • How do you solve this?
    12·1 answer
  • How do you simplify -24z2 divided by 6z
    15·2 answers
  • A 4500 kg vehicle and a 3700kg vehicle are both moving at a speed of 85m/s toward east.Calculate the momentum of each veheicle?
    15·1 answer
  • a contractor crew can frame 3 houses in a week how long will it take them to frame 54 houses if they frame the same number each
    12·1 answer
  • Felicia bought a jackhammer priced at $8.48. The total price, including sales tax, was $9.73. What was the sales tax percentage?
    7·1 answer
  • In the beginning steps of constructing a perpendicular bisector of CD, the compass should be stretched out
    10·1 answer
  • (30 POINTS COME AND GET IT FOR A MULTIPLE CHOUCE XD) which of the following is the solution for s in the system of equation show
    14·2 answers
  • Find the value of x (URGENT/GIVING BRAINLIEST)
    6·1 answer
  • HELP WITH MATH IF YOU DON'T KNOW THE ANSWER THEN GET OUT OF THE QUESTION
    5·1 answer
  • I need help with this!!!!!!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!