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
3x-4=17<br><br> whats he answer x
Anestetic [448]

Answer:

x = 7

Step-by-step explanation:

3x-4=17\\3x=17+4\\3x=21\\x=\frac{21}{3}\\ x=7

4 0
2 years ago
Read 2 more answers
Ashley wants to purchase some bottles of soda to take along to her friend's house for a sleepover. While shopping, Ashley discov
Alik [6]

The option that is the best buy is option 3.

<h3>What is the best buy? </h3>

The best buy is the option that has the lowest average cost. Average cost is the total cost of the bottles divided by the number of bottles.

Average cost = total cost / number of bottles

Option 1: $8.75 / 5 = $1.75

Option 2: $5.97 / 3 = $1.99

Option 3: $6.36 / 4 = $1.59

Option 4: $12.60 / 7 = $1.80

To learn more about division, please check: brainly.com/question/194007

6 0
2 years ago
Eduardo está pensando en un número que esta entre 1 y 20,y que tiene exactamente 5 factores.en que número esta pensando
lorasvet [3.4K]
Eduardo esta pensando en el numero 16. El numero 16 tiene 5 factores que son, (1, 2, 4, 8, 16) 
7 0
3 years ago
What is the Answer???
MAXImum [283]

Answer: 190

Step-by-step explanation:

55 +50+90= 195

then round it and you get 195

3 0
3 years ago
Question<br> What is the factored form of this polynomial?<br> p(x) = x + 7x2 + 4x - 12
Soloha48 [4]

Answer:

^(3)+7x^(2)+4x-12

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • During their first home game, the Eagles soccer team drew a total of 176 fans. By the second game, this number grew to 202 fans.
    13·1 answer
  • Factor 2x^3+4x^2-6x+9
    15·2 answers
  • X-2y=1, solve for y, help!
    7·1 answer
  • How would i get the area and perimeter of this?
    12·2 answers
  • A police car drives with a constant speed of 112 km/h. How far can it travel in 4 hours.
    11·2 answers
  • Suppose △AYH≅△ZRL.
    5·2 answers
  • Use the figure below to find the answer.
    13·1 answer
  • A telephone company in germany charges 0.12 euro per minute to call the US after a connection fee of 1.50 euro what is the total
    9·1 answer
  • If RT= 19 meters, find LW.
    5·1 answer
  • Katrina had $138.72 in her checking account. she wrote checks to take out $45.23 and $18.00, and then made a deposit of $75.85 i
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!