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
Aleksandr [31]
3 years ago
9

Assume every 10-digit natural number is a possible telephone number except those that begin with 0, 1 or 2. What fraction of tel

ephone numbers begins with 8 and ends with 8?
Mathematics
1 answer:
lana [24]3 years ago
5 0

Answer: 1/70

Step-by-step explanation:

This is a question that can also be interpreted as what is the probability of having the first number of a phone number to be 8 and the last number of the phone number to also be 8. This answer gives the fraction of the phone numbers that starts with 8 and end with 8.

Since three numbers (0,1,2) cannot start a phone number and we are left to pick from 7 numbers,

then the probability of figure "8" starting phone number = 1/7

Since all 10 numbers can possibly end a phone number,

then the probability of having figure "8" as the last digit of a phone number = 1/10

Hence probability of having "8" as the first and last digit of a phone number = fraction of total telephone numbers that begin with digit 8 and end with digit 8 = 1/7 × 1/10 = 1/70.

You might be interested in
Why would a pacifier represent your past
krok68 [10]

Answer:

maybe?

Step-by-step explanation:

I am not sure

7 0
3 years ago
What is the sum of ​ 13 5/7 + 13/28 ​ ?
nydimaria [60]

<em><u>Look at the attached picture⤴</u></em>

<em><u>Hope it will help u....:)</u></em>

4 0
3 years ago
I need help with this. What is the answer? (13 x 4 +5²) - 2
Fittoniya [83]

Answer: 75

Step-by-step explanation:

7 0
1 year ago
Please help, I’ll mark your answer as brainliest.
valentina_108 [34]

Answer:

x = - \frac{13}{2} - \sqrt{157}/ 2 or

x= - 13/2 + \sqrt{157}/ 2

Step-by-step explanation:

1- Substitute and calculate

if you don't want to give me brainlist its okay I don't mind I just like helping people with their problems

4 0
2 years ago
Identify the model that shows 4 items being divided equally among 3 people.
Greeley [361]

Answer:

The second one. 3/4.

If you want could you mark me brainliest?????

8 0
2 years ago
Other questions:
  • Find the amount of sap the maple syrup producer collected from each tree if the total amount (5 gallons) was redistributed equal
    14·2 answers
  • What is (2,1) and (8,9) slope?
    14·2 answers
  • Which statement is rewritten as a conditional statement for the sentence below?
    14·2 answers
  • Find the solutions of the system y = –2x – 1 and y = 3–x–1. What are the x-coordinates of the solutions? Choose all that apply.
    5·2 answers
  • A soccer field is 120 yards long and 60 yards wide.How long is the diagonal of the field?
    12·2 answers
  • The original rectangle has a perimeter of 16
    10·2 answers
  • What is the volume of the right cone shown below? 10 O A. 7577 units3 B. 100n units3 C. 1507 units3 375 units3​
    10·1 answer
  • PLS I NEED HELP I ONLY HAVE 15 MINS I BEG YOU PLEASE!! :(
    7·1 answer
  • A) If there were 3 elephants at the zoo, how many hippos would there be?
    14·2 answers
  • What is the mean of this data set?<br> {10, 5, 7, 9, 5, 18}<br> Enter your answer in the box.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!