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
trasher [3.6K]
3 years ago
5

Please help me, marking brainliest if correctly

Mathematics
1 answer:
Svetlanka [38]3 years ago
7 0

Answer:

x = -11

Step-by-step explanation:

The measure at angle 2 should equal 80 degrees.

You are given that it is equal to x+91. So,

x+91 = 80

x = -11

You might be interested in
Emerson practice a game that was on sale for 18% off the sales tax in his country is a present let y represent the original pric
lawyer [7]

Answer: y - 0.18y

Step-by-step explanation:

From the question, Emerson practice a game that was on sale for 18% off the sales tax in his country.

Let y represent the original price of the game. The be used to determine the final cost of the game will be:

We have to subtract the 18% discount from the original price to get the final cost of the game. This will be:

= y - (18% of y)

= y - (18/100 × y)

= y - (0.18 × y)

= y - 0.18y

The final expression is y-0.18y

4 0
3 years ago
Given a population with a mean of muμequals=100100 and a variance of sigma squaredσ2equals=3636​, the central limit theorem appl
lakkis [162]

Answer:

a) \bar X \sim N(100,\frac{6}{\sqrt{25}}=1.2)

\mu_{\bar X}=100 \sigma^2_{\bar X}=1

b) P(\bar X >101)=1-P(\bar X

c) P(\bar X

Step-by-step explanation:

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".  

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=100,\sigma=6)  

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. What are the mean and variance of the sampling distribution for the sample​ means?

\bar X \sim N(100,\frac{6}{\sqrt{25}}=1.2)

\mu_{\bar X}=100 \sigma^2_{\bar X}=1.2^2=1.44

b. What is the probability that x overbarxgreater than>101

First we can to find the z score for the value of 101. 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{101-100}{\frac{6}{\sqrt{25}}}=0.833  

And we want to find this probability:

P(\bar X >101)=1-P(\bar X

On this last step we use the complement rule.  

c. What is the probability that x bar 98less than

First we can to find the z score for the value of 98.

z=\frac{98-100}{\frac{6}{\sqrt{25}}}=-1.67  

And we want to find this probability:

P(\bar X

5 0
3 years ago
4x + 6 &lt; -6<br><br> Show steps used to solve the problem :)
Sergeeva-Olga [200]

Answer:

hope it helps you........

7 0
2 years ago
Read 2 more answers
Help please? i would really appreciate it.
raketka [301]

Answer:

The answer is option C i.e; y=0.9x-45

Step-by-step explanation:

When you substitute the values of x you have to get same values as given in the table

For example: substitute x=50 in the equation y=0.9x-45

Y= 0.9(50)-45

Y= 45-45

Y=0


6 0
3 years ago
See attached file for question
Leto [7]

Answer:

1/6

Step-by-step explanation:

1/3 + 1/2= <em>1</em><em>/</em><em>6</em><em>. </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>so</em><em> </em><em>1</em><em>/</em><em>6</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>answer</em>

4 0
3 years ago
Other questions:
  • I'm still stuck on this one
    6·1 answer
  • Simplify 11/66 12/24 what is the answer
    7·2 answers
  • Theresa has 9 Papers each day and she also has 815 color how ma y Papers does she have
    15·1 answer
  • You can peel 4 potaoes in 10 minute. How long will it take you to peel 14 potatoes?
    9·2 answers
  • Matrices and determinants What is 4c?
    10·2 answers
  • Jim has 7/10
    10·2 answers
  • Which situations can be modeled by a linear function?
    6·1 answer
  • -45 + -20
    8·2 answers
  • For each of the following angles, name the angle that is congruent.
    10·1 answer
  • Help math class someone explain this to meee!!??
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!