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
den301095 [7]
3 years ago
10

Four friends order a 12 plzza to share.

Mathematics
1 answer:
OlgaM077 [116]3 years ago
4 0

Ans   0.33333333333

Step-by-step explanation:

You might be interested in
What is 2 times the square root of 9 minus the square root of 4 expressed in simplified form?
Leokris [45]
Well I believe it's b
8 0
3 years ago
Read 2 more answers
15+0.5x=25+0.25x please show how
sveticcg [70]

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

x= 40

8 0
2 years ago
Read 2 more answers
How many lines of symmetry does a rhombus that is not a square have?
adoni [48]
Look ar the picture.

Your answer: 2 lines of symmetry.

7 0
3 years ago
The heights of North American women are normally distributed with a mean of 64 inches and a standard deviation of 2inches.a. Wha
Charra [1.4K]

Answer:

a)P(X>66)=P(Z>1)=1-P(Z

b)P(\bar X >66)=P(Z>2)=1-P(Z

c) P(\bar X >66)=P(Z>10)=1-P(Z

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

The central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

2) Part a

Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:

X \sim N(64,2)  

Where \mu=64 and \sigma=2

We are interested on this probability

P(X>66)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X>66)=P(\frac{X-\mu}{\sigma}>\frac{66-\mu}{\sigma})=P(Z>\frac{66-64}{2})=P(Z>1)

And we can find this probability on this way:

P(Z>1)=1-P(Z

3) Part b

From the central limit theorem we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

P(\bar X >66)=P(Z>\frac{66-64}{\frac{2}{\sqrt{4}}}=2)

And using a calculator, excel or the normal standard table we have that:

P(Z>2)=1-P(Z

4) Part c

P(\bar X >66)=P(Z>\frac{66-64}{\frac{2}{\sqrt{100}}}=10)

And using a calculator, excel or the normal standard table we have that:

P(Z>10)=1-P(Z

3 0
3 years ago
A family wants to purchase a house that costs ​$145,000. They plan to take out a ​$115,000 mortgage on the house and put ​$30,00
AysviL [449]

Answer:

A. 15-year mortgage =$141,478.20

30-year mortgage =$187,707.60

B. $46,229.40

Step-by-step explanation:

A. Calculation to Determine the amount they would save on the cost of the house if they selected the 15-year mortgage rather than the​ 30-year mortgage.

Calculation for 15-year mortgage

Cost amount to save for 15-year mortgage=$785.99*15-year*12 months

Cost amount to save for 15-year mortgage =$141,478.20

Calculation for 30-year mortgage

Cost amount to save for 30-year mortgage =$521.41*30-year*12 months

Cost amount to save for 30-year mortgage =$187,707.60

B. Calculation for How much would they save if they selected the​ 15-year mortgage

Using this formula

Amount to save=30-year mortgage -15-year mortgage

Let plug in the formula

Amount to save=$187,707.60-$141,478.20

Amount to save=$46,229.40

Therefore How much would they save if they selected the​ 15-year mortgage will be $46,229.40

5 0
3 years ago
Other questions:
  • The graph of a function must be linear if it has what characteristic?
    11·2 answers
  • a recipe calls for the following amounts 3 1/4 cups sugar 3/4 cup water 1 1/2 cups flour i only want to make half of the recipe
    7·1 answer
  • X) 7.A.47
    12·1 answer
  • Given point (-6, -2) and a slope of 5, write an equation in slope-intercept form.
    9·1 answer
  • Which ordered pairs make the open sentence true?
    5·1 answer
  • If the radius of a circle with an area of 11.5 inches squared is multiplied by 6, what is the area of the new circle?
    7·1 answer
  • The x-intercept of the line x = 3.5 is . the y-intercept of the line y = -6.5
    8·1 answer
  • A bowl in the shape of a hemisphere has a volume of 144π cubic centimeters. What is the radius of the bowl?
    10·1 answer
  • I will do anything for a legit answer plsssssss
    5·1 answer
  • What is the solution to 2h + 8 > 3h - 6
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!