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
Katen [24]
3 years ago
5

A person has forgotten the last digit of a telephone number, so he dials the number with the last digit randomly chosen. How man

y times does he have to dial (not counting repetitions) in order that the probability of dialing the correct number is more than 0.5.
Mathematics
1 answer:
aleksklad [387]3 years ago
4 0

Answer:

More than 5 times

Step-by-step explanation:

There are 10 options for the last digit (0, 1, 2.....9)

Probof 0.5 means 50% chance of getting it right,

Which would happen when he has tried 50% of the total possibilities, which are 10

50% of 10 = 5

He'll have to dial 5 times for a probability of 0.5.

More than 5 times for a probability of more than 0.5

You might be interested in
Write the number 3.8 in the forum of a/b using integers to show that it is a rational number
Naya [18.7K]
The answer is b. 38 divided by 10 equals 3.8
3 0
3 years ago
Read 2 more answers
Two lengths are in ratio 7:8.if the first length is 273. What amount is the second length
Sergio [31]

Answer:

312

Step-by-step explanation:

Since the ratio is 7:8, mark it as 7x:8x.

Now, they said that the first length is 273. Solve the equation:

7x=273

x=39

Substitute it into 8x. 39*8=312. That's your answer.

PLS MARK BRANILIEST!!!

3 0
3 years ago
What is this pls help me​
Drupady [299]

Answer:

D’=(3,3); F’=(-2,-2); E’= (-5,0)

Step-by-step explanation:

To find the reflection over the y axis (the line x=0), you just need to change the x either from positive to negactive or the opposite.

8 0
3 years ago
Read 2 more answers
Give the Domain And Range of the function.
Verizon [17]

Answer:

The last one

Step-by-step explanation:

Domain is on the x - axis, so it starts and stops on 1 and 6 and all the other symbols mean that x could be 1, 6, or anything in between. Range is on the y - axis, so the highest point is seven and the lowest is one. Y could be 1, 7, or anything in between.

3 0
3 years ago
X
Oxana [17]
I don’t quite understand this question since it’s all spaced out and there’s no picture but since domain is x/the indecent variable, “x = -6, -1, 0, 3” (the first answer choice” is correct
3 0
3 years ago
Other questions:
  • Work out the area of the rectangle us a calculator giving your answer in mixed numbers 5 1/6cm 2 2/7cm?
    9·2 answers
  • Point C ∈ AB , AB = 30m. Point C is 1.5 times farther from point A than from point B. Find AC and CB.
    12·1 answer
  • 11. A wave has a wavelength of 125 meters is moving at a speed of 20 m's. What is its frequency?
    8·1 answer
  • Are the lines 2y - x = 6 and 6x - 3y - 33 = 0 parallel, perpendicular, or neither?
    10·1 answer
  • Number 39 I'm so stuck help plz
    13·1 answer
  • There are 812,000 gallons of water in an olympic training center's pool. Express this number in scientific notation.
    10·1 answer
  • Solve the equation x3 = 8 A. 2 B. 2.7 C. 24 D. 512
    11·1 answer
  • Problem type join results unknown
    9·1 answer
  • The price of a pair of shoes increases from $65 to $81. What is the percent increase to the
    14·1 answer
  • What is 56 ÷ (-8) = ___ need fast will give brainliest
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!