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
Darina [25.2K]
3 years ago
8

Some four​-digit ​numbers, such as 3003 and 6226​, read the same forward and backward. If a boy selects a number from all four​-

digit ​numbers, find the probability that it will read the same forward and backward.
Mathematics
1 answer:
Norma-Jean [14]3 years ago
3 0

<u>Answer:</u>

The probability of selecting such number =\frac{90}{9000} = \frac{1}{100}

<u>Explanation:</u>

4-digit numbers start from 1000 and ends at 9999

So, there are 9000 4-digit numbers present

There are 90 palindrome numbers (which reads the same forward and backward) present between 1000-9999. They are 1001; 1111; 1221; 1331; ... 1001; 1111; 1221; 1331; ... to 9669; 9779; 9889; 9999; 9669; 9779; 9889; 9999

Therefore, the probability of selecting such number =\frac{90}{9000} = \frac{1}{100}

You might be interested in
Plz help me with this
Sonbull [250]
1) this is total area of two triangle
area of a triangle=1/2*b*h
A=1/2*9*4
A=18 inches^2
multiply by 2 because there are two triangle with same measure
2A=2*18=36 inches^2

3) this is a area of rectangle and a triangle and then subtract
A2=9.3x7.8= 72.54 
area of triangle A1=1/2*7.8 *3.3=12.87
A2-A1=59.69 mm^2

5) now u ca do it


4 0
3 years ago
Please someone answer this!
Kaylis [27]

Answer: 108$

Step-by-step explanation:

5 0
3 years ago
Please help
ikadub [295]

Answer:

Quadratic

Step-by-step explanation:

Linear has a constant growth and exponential cannot be negative.

6 0
3 years ago
Read 2 more answers
Solve the equation for the indicated variable S=2πrh+2πr²<br> Solve for h
valina [46]

Answer:

Good luck :)

Step-by-step explanation:

S=2πrh+2πr ²

subtract 2πr ² from each side

S -2πr ² = 2πrh

divide by 2πr from each side

(S -2πr ² )/ 2πr  = h

4 0
3 years ago
Find two consecutive odd integers if twice the larger, increased by the smaller equals 37,
Alexxx [7]

Answer:

11 and 13

Step-by-step explanation:

the first (smaller) odd integer can be called x

the second (larger) odd integer can be called x+2

2(x+2)+x = 37

<em>[simplify . . .]</em>

2x+4+x = 37

3x+4 = 37

<em>[subtract 4 from each side]</em>

3x = 33

<em>[divide each side by 3; find smaller odd integer]</em>

x = 11

<em>[add 2 to find larger odd integer]</em>

x+2 = 13

6 0
3 years ago
Other questions:
  • I NEED HELP WITHIN AN HOUR!!! HELP!!
    15·2 answers
  • Which of the following expressions is equivalent to 6m - 10?
    12·1 answer
  • What is 4 2/7 x 2 1/5
    15·2 answers
  • C=8/7(k-55) solve for k
    9·1 answer
  • A box of rice costs $2.99 for 62 oz. What is the unit cost for 1 oz?
    11·2 answers
  • Solve this system <br> 2x-4y=14<br> 3y+5x=9
    15·1 answer
  • Answer will give brainliest
    8·2 answers
  • Help Please!! I'm confused about this... (you can explain or screenshot the graph and show where the points are)
    15·1 answer
  • Can someone help me please!!
    11·2 answers
  • 8) A box of 12 light bulbs fell
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!