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
dolphi86 [110]
3 years ago
6

Will give brainliest!

Mathematics
2 answers:
enyata [817]3 years ago
4 0

Answer:

Step-by-step explanation:

6(x+1) -5(x +2)

6x +6 - 5x -10

x -4

x= 4

Ne4ueva [31]3 years ago
4 0

Answer:6x+6-5x+10

x=4

Step-by-step explanation:

You might be interested in
If your pencil is 20 centimeters long how many millimeters is it
Nonamiya [84]
200 milimeters is the answer
4 0
2 years ago
So like, its one of those compare things with: <, >, and = and it says compare: 1/2 of 10 (I know that) but this part stoo
nirvana33 [79]
I’m confused?? Do you just need 1/3 of 12? That’s 4 because 12 x 1 =12 and 12/3 is 4 lol
6 0
2 years ago
In the past, the average age of employees of a large corporation has been 40 years. Recently, the company has been hiring older
Viktor [21]

Answer:

p_v =P(t_{(63)}>2.5)=0.0075  

If we compare the p value and the significance level given \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can conclude that the mean age is significantly higher than 45 years at 5% of significance.  

Step-by-step explanation:

1) Data given and notation  

\bar X=45 represent the mean height for the sample  

s=16 represent the sample standard deviation for the sample  

n=64 sample size  

\mu_o =40 represent the value that we want to test

\alpha=0.05 represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean age is higher than 40 years, the system of hypothesis would be:  

Null hypothesis:\mu \leq 40  

Alternative hypothesis:\mu > 40  

If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic

We can replace in formula (1) the info given like this:  

t=\frac{45-40}{\frac{16}{\sqrt{64}}}=2.5    

P-value

The first step is calculate the degrees of freedom, on this case:  

df=n-1=64-1=63  

Since is a one right tailed test the p value would be:  

p_v =P(t_{(63)}>2.5)=0.0075  

Conclusion  

If we compare the p value and the significance level given \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can conclude that the mean age is significantly higher than 45 years at 5% of significance.  

6 0
2 years ago
I really need help!If someone answers this,I will be happy to mark the brainest answer!EXTRA:you can answer the top question for
andreev551 [17]

9) They traveled 31.9 hours over the 3-day trip.

10.9 + 8.6 + 12.4 = 31.9

10) She does not have enough money. She has $12, but everything she wants to purchase would cost $12.39.

Large drink = 1.79

Turkey sandwich = 4.85

1.79 + 4.85 = 6.64

6.64 + 5.75 = 12.39

5 0
2 years ago
- 7 x - 4 y = - 12 <br> - 3 x + y = - 16
LenaWriter [7]
The answer is x=4 and y=-4
4 0
3 years ago
Other questions:
  • Mary had 34 baseball cards in his collection
    9·1 answer
  • Tyrell bought a pair of jeans for $23.99. With sales tax, the total was $25.67. What was the amount of the sales tax?
    9·2 answers
  • Please need help thank you
    11·1 answer
  • (5r+7)(5r-7)<br><br> *Multiplying Polynomials
    5·2 answers
  • Solve the equation for z^3-z^2-12z=0<br><br> The solutions are z=?, z=?, and z=?
    15·1 answer
  • PT = 7x + 3 and TQ = 9x - 5
    9·1 answer
  • What is the solution to the system of equations shown below?
    9·1 answer
  • HELP ASAP ILL GIVE BRAINLY
    10·1 answer
  • The sum of two numbers is 21 the second number is 6 times the first number work out the two numbers
    9·1 answer
  • please help me with this question i think someone else answered and they misread or didnt understand the question so i am repost
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!