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
forsale [732]
3 years ago
11

I need help on my quiz!

Mathematics
1 answer:
Fantom [35]3 years ago
3 0
I can’t see good this image
You might be interested in
A variable is normally distributed with mean 6 and standard 2 deviation .
Tju [1.3M]

The normal distribution is also known as the Gaussian distribution. The percentage of all possible values of the variable that are less than 4 is 15.87%.

<h3>What is a normal distribution?</h3>

The normal distribution, also known as the Gaussian distribution, is a symmetric probability distribution about the mean, indicating that data near the mean occur more frequently than data distant from the mean. The normal distribution will show as a bell curve on a graph.

A.) The percentage of all possible values of the variable that lie between 5 and 9.

P(5<X<9) = P(X<9) - P(5<X)

               = P(z<1.5) - P(-0.5<z)

               = 0.9332 - 0.3085

               = 0.6247

               = 62.47%

B.) The percentage of all possible values of the variable that exceed 1.

P(X>1) = 1 - P(X<-2.5)

          = 1-0.0062

          = 0.9938

          = 99.38%

C.) The percentage of all possible values of the variable that are less than 4.

P(X<4) = P(X <4)

           = P(z<-1)
           = 0.1587

           = 15.87%

Learn more about Normal Distribution:

brainly.com/question/15103234

#SPJ1

8 0
2 years ago
PLEASE SOVEL THIS I WILL GIVE OUT 20 POINT
Anettt [7]

9514 1404 393

Answer:

  21.25 seconds

Step-by-step explanation:

In miles per second, the speed of the jet is ...

  (720 mi/h)/(3600 s/h) = 1/5 mi/s

The speed of the sound is the same:

  (1 mi)/(5 s) = 1/5 mi/s

Then the rate of closure between the airplane and the sound is ...

  (1/5 mi/s) +(1/5 mi/s) = 2/5 mi/s

To find the time required to close a gap of 8 1/2 miles, we can use the relation ...

  time = distance/speed

  time = (8.5 mi)/(0.4 mi/s) = 21.25 s

The pilot will hear the thunder 21.25 seconds after the flash.

5 0
3 years ago
Which is better to buy 14 rolls of paper towels for $18
Feliz [49]

In order to find out what deal is better:

  • We have to find the unit rate for each deal

  • Total amount of paper towels ÷ The price

So it would be....

  • 18 ÷ 14 = 1.285714
  • 12 ÷ 10 = 1.2

Short Answer:

The better deal is 10 rolls of paper towels for $12.

Long Answer:

I wanted to find out the price per roll of paper towel for each deal so I created a unit rate problem which is the numerator divided by the denominator. From there, I was able to get my answers, compare which one was less than the other, and select the best deal.

Hopefully this helped >-<

3 0
1 year ago
Find the area of the shaded region for the given figure in terms of x.
Vlada [557]

Answer:

Area of the shaded region = (6x + 3)

Step-by-step explanation:

Area of the shaded region = Area of the large rectangle - Area of the small rectangle

Area of the large rectangle = Length × Width

                                             = (x + 2)(x + 2)

                                             = (x + 2)²

                                             = x² + 4x + 4

Area of the small rectangle = (x - 1)(x - 1)

                                             = (x - 1)²

                                             = x² - 2x + 1

Area of the shaded region  = (x² + 4x + 4) - (x² - 2x + 1)

                                             = 6x + 3

Area of the shaded region = (6x + 3)

4 0
3 years ago
Question show in picture!
Wewaii [24]

Answer: H is the correct answer

Step-by-step explanation:

First, Kendra deposited $78 into her savings. Then, she added $50 more which is 128. She withdraw $27 and was left with $101

5 0
2 years ago
Other questions:
  • Do two natural numbers always have a gcf
    14·2 answers
  • How would you construct a histogram out of a stem and leaf plot
    9·1 answer
  • What is the value of (g o f)(3)?
    5·1 answer
  • 5. The volume of a rectangular prism is 2058 cm3. The length is three times
    15·1 answer
  • In a race, Jane ran 3 minutes less than twice as many minutes as Mike ran. Write an expression to represent the number of minute
    9·2 answers
  • Find the exact value of sin 2pi/3
    12·1 answer
  • If it takes 3 men 5 hours to dig 12 holes, how many hours does it take for 3 men to dig 84 holes?
    13·1 answer
  • How many blocks is it from the school bus stop to the theater bus stop?​
    10·1 answer
  • What is 2x2. Who ever answer will be the Brainlyist I don’t know how to spell oof
    7·2 answers
  • If $300 is invested at a rate of 5% per year and is compounded quarterly, how much will the investment be worth in 15 years?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!