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
sesenic [268]
3 years ago
10

Please help 10 FREE POINTS!!!!

Mathematics
2 answers:
Maurinko [17]3 years ago
7 0

Answer:

364.5

Step-by-step explanation:

you would need a calculator for it, unless you can do exponential math at such a degree... if you're using a PC there's a good graphing calculator at Desmos.com, it can show you how a graph looks, which shows that when n is 7, the answer is 364.5. also it wouldn't be 1093.5 because the exponent is n-1 which means that while n could be 7, you need to take away 1 before using it as an exponent.

brilliants [131]3 years ago
5 0
The answer should be 729/2
You might be interested in
On Friday, a local hamburger shop sold a combined total of 387 hamburgers and cheeseburgers. The number of cheeseburgers sold wa
ruslelena [56]
Let the number of hamburgers sold be "h" and the number of cheeseburgers be "2h" as it was two time as the humbugers .form equation frome it '2h+h=387".comp the like terms which gives you 3h=387 divide each side by 3 which gives you h=129 which is equal to the number hambyrgers .multiply 129 by 2 to get the number of cheeseburgers which is 258

7 0
3 years ago
A train traveled 1/5 of the distance between two cities and 3/4 of an hour at this rate how many hours will it take the train to
sattari [20]

Answer:

15/4 or 3 3/4

Step-by-step explanation:

since 1/5 has 1 as a numerator,

5 x 3/4=

15/4

it will take about 3 hours and 45 minutes

7 0
2 years ago
How can you check to see if you have correctly factored an expression?
AleksandrR [38]
Expand the factored expression (multiply all the terms back together), and see if it matches up with the original expression.
6 0
3 years ago
Use a ratio to compare the values. Simplify the ratio.
Ivenika [448]
The question says, 12 yards to 20 feet. First let's convert the units. One yard is equal to 3 feet. So if we multiply, 3\cdot 12=36\quad feet . Now we will, divide 36 feet to 20 feet and we'll simplify. \frac { 36 }{ 20 } both 36 and 20 are divisible by 4, that means 4 is their common factor. We can simplify by that. \frac { 36 }{ 20 } =\frac { 4\cdot 9 }{ 4\cdot 5 } =\frac { 4 }{ 4 } \cdot \frac { 9 }{ 5 } =1\cdot \frac { 9 }{ 5 } =\frac { 9 }{ 5 } 

The answer is D. 9:5 
4 0
3 years ago
A simple random sample of size equals 49 is obtained from a population with mu equals 88 and sigma equals 14. ​(a) Describe the
Gnoma [55]

Answer:

a) \bar X \sim N(88,\frac{14}{\sqrt{49}}=2)  

b) P(\bar X >91.2)=1-P(\bar X

Step-by-step explanation:

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".

The complement rule is a theorem that provides a connection between the probability of an event and the probability of the complement of the event. Lat A the event of interest and A' the complement. The rule is defined by: P(A)+P(A') =1

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

X \sim N(\mu=88,\sigma=14)  

And let \bar X represent the sample mean, by the central limit theorem, the distribution for the sample mean is given by:  

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

​(a) Describe the sampling distribution of x overbar.

\bar X \sim N(88,\frac{14}{\sqrt{49}}=2)  

(b) What is Upper P (x overbar greater than 91.2 )​

First we can to find the z score for the value of 91.2. And in order to do this we need to apply the formula for the z score given by:

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

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

z=\frac{91.2-88}{\frac{14}{\sqrt{49}}}=1.6

And we want to find this probability:

P(\bar X >91.2)=1-P(\bar X

On this last step we use the complement rule.

3 0
3 years ago
Other questions:
  • In the diagram, how many circles are there for each square?<br> DA 1
    11·1 answer
  • 25 POINTS!!!!
    12·1 answer
  • Given the two sets, which statement is true?
    8·1 answer
  • There is a pizza cut into 8ths, if you eat 3/4 of it how much is left?
    5·1 answer
  • PLZ HELPPP MEEEE What is the difference between a rate and a unit rate
    11·1 answer
  • Determine the intercepts of the line.<br> 3x + 2y = 5<br> y-intercept:<br> X-intercept:
    9·2 answers
  • The ratio of cats to dogs at April's Animal Shelter was 3 to 2. How many dogs were in the shleter if there were a total of 75 ca
    15·1 answer
  • Explain how to find simple interest
    8·2 answers
  • Find the length of the third side of the right triangle. Give an exact answer and an approximation to three decimal places if ne
    7·1 answer
  • STILL GOING BAN ON THEM ANYWAY
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!