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
Please help me, and please do not make a download, because I cannot download anything on my computer. THank you!!!
VikaD [51]

Answer:

(A)48

(B)volume of one of the small cubes is 1/64cm^3

c)3/4x1x1=3/4cm^3

Step-by-step explanation:

3 0
2 years ago
Sophia can walk 1.4 miles in 15 minutes. At this rate how far can she walk in an hour
spin [16.1K]
At this rate she can walk 5.6 miles because you need to multiply 1.4 by each 15 minutes until it gets to a hour so you get 5.6 miles
6 0
3 years ago
Read 2 more answers
Simplify 30x-140-(x-4)
balu736 [363]

Answer:

x = 4.7

Step-by-step explanation:

30x - 140 -(x - 4)

Multiply the -1 into (x - 4)

30x - 140 - x + 4

Add/subtract

29x - 136 = 0

      +136

29x = 136

\frac{29x}{29} = \frac{136}{29}

x = 4.689655172413793

8 0
3 years ago
What is the slope between the points (-3, 7) and (-5, 4)​
IrinaVladis [17]

Answer:

3/2

Sorry for the bad handwriting.

4 0
3 years ago
after a gymnastic competition, the coaches reviewed all the gymnasts scores to identify areas for improvement. a missed landing
aleksley [76]

Road trippin' with my two favorite allies

Fully loaded we got snacks and supplies

It's time to leave this town, it's time to steal away

Let's go get lost anywhere in the U.S.A.

Let's go get lost, let's go get lost...

Blue you sit so pretty west of the one

Sparkle light with yellow icing just a mirror for the sun

Just a mirror for the sun

Just a mirror for the sun

These smiling eyes are just a mirror for...

So much has come before those battles lost and won

This life is shining more forever in the sun

Now let us check our heads and let us check the surf

Staying high and dry's more trouble than it's worth in the sun

Just a mirror for the sun

Just a mirror for the sun

These Smiling eyes are just a mirror for...

In Big Sur we take some time to linger on

We three…

6 0
3 years ago
Read 2 more answers
Other questions:
  • The question is.......
    11·2 answers
  • How do i find cos Z
    13·1 answer
  • The temperature of a freezer is never greater than -2 Celsius. Yesterday the temperature was at -10 Celsius, but it increased at
    15·1 answer
  • Please tell me, how do i solve percentages? And yes, i know there is more than one way. Please tell me the methods to solve all
    11·1 answer
  • Brian invests £1800 into his bank account.
    9·1 answer
  • An anchor 15 m below the surface of the ocean is lowered 4. m. Then it is
    11·1 answer
  • At the start of a trip, a car’s gas tank contains gallons of gasoline. During the trip, the car consumes 1⁄8 gallons of gasoline
    12·1 answer
  • Rounding to the nearest ten
    14·1 answer
  • In a family the ages of children arranged from youngest to oldest are 2,6,y,14 and z if the square of ages is in an a.p what is
    9·1 answer
  • Which of the following is NOT an expression?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!