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
asambeis [7]
3 years ago
6

How do you solve the equation 9/14=-2

Mathematics
1 answer:
Lostsunrise [7]3 years ago
7 0

Answer: the equation is false

Step-by-step explanation:

You might be interested in
Please help i’m crying and throwing up
dsp73

Answer:

C. 90

Step-by-step explanation:

mark it brainliest if it helps you ❤️

3 0
2 years ago
Solve this: k/3 = -4​
Veseljchak [2.6K]

Step-by-step explanation:

  • k/3= -4
  • k= -4×3
  • k= -12

<h2>stay safe healthy and happy.</h2>
6 0
2 years ago
Read 2 more answers
A college infirmary conducted an experiment to determine the degree of relief provided by three cough remedies. Each cough remed
KiRa [710]

Answer:

p_v = P(\chi^2_{4,0.05} >3.81)=0.43233

Since the p values is higher than the significance level we FAIL to reject the null hypothesis at 5% of significance, and we can conclude that we don't have significant differences between the 3 remedies analyzed. So we can say that the 3 remedies ar approximately equally effective.

Step-by-step explanation:

A chi-square goodness of fit test "determines if a sample data matches a population".

A chi-square test for independence "compares two variables in a contingency table to see if they are related. In a more general sense, it tests to see whether distributions of categorical variables differ from each another".

Assume the following dataset:

                               NyQuil          Robitussin       Triaminic     Total

No relief                    11                     13                      9               33

Some relief               32                   28                     27              87

Total relief                7                       9                      14               30

Total                         50                    50                    50              150

We need to conduct a chi square test in order to check the following hypothesis:

H0: There is no difference in the three remedies

H1: There is a difference in the three remedies

The level os significance assumed for this case is \alpha=0.05

The statistic to check the hypothesis is given by:

\sum_{i=1}^n \frac{(O_i -E_i)^2}{E_i}

The table given represent the observed values, we just need to calculate the expected values with the following formula E_i = \frac{total col * total row}{grand total}

And the calculations are given by:

E_{1} =\frac{50*33}{150}=11

E_{2} =\frac{50*33}{150}=11

E_{3} =\frac{50*33}{150}=11

E_{4} =\frac{50*87}{150}=29

E_{5} =\frac{50*87}{150}=29

E_{6} =\frac{50*87}{150}=29

E_{7} =\frac{50*30}{150}=10

E_{8} =\frac{50*30}{150}=10

E_{9} =\frac{50*30}{150}=10

And the expected values are given by:

                               NyQuil          Robitussin       Triaminic     Total

No relief                    11                     11                       11               33

Some relief               29                   29                     29              87

Total relief                10                     10                     10               30

Total                         50                    50                    50              150

And now we can calculate the statistic:

\chi^2 = \frac{(11-11)^2}{11}+\frac{(13-11)^2}{11}+\frac{(9-11)^2}{11}+\frac{(32-29)^2}{29}+\frac{(28-29)^2}{29}+\frac{(27-29)^2}{29}+\frac{(7-10)^2}{10}+\frac{(9-10)^2}{10}+\frac{(14-10)^2}{10} =3.81

Now we can calculate the degrees of freedom for the statistic given by:

df=(rows-1)(cols-1)=(3-1)(3-1)=4

And we can calculate the p value given by:

p_v = P(\chi^2_{4,0.05} >3.81)=0.43233

And we can find the p value using the following excel code:

"=1-CHISQ.DIST(3.81,4,TRUE)"

Since the p values is higher than the significance level we FAIL to reject the null hypothesis at 5% of significance, and we can conclude that we don't have significant differences between the 3 remedies analyzed.

4 0
3 years ago
In 2002, Tiger Woods won the masters tournament. His scores were -4, -3, -2, and -1. What was his final score?
puteri [66]

Answer:

-10

Step-by-step explanation:

-4 + -3 = -7

-7 + -2 = -9

-9 + -1 = -10

3 0
2 years ago
What are the coordinates of the point on the directed line segment from (3,3) to
sergey [27]

Answer:

3,5

Step-by-step explanation:

the answer is 3,5

I hope this helps

5 0
3 years ago
Other questions:
  • A(n) ____ has income and expenses.
    8·2 answers
  • In two or more complete sentences explain how you would set up and solve the equation.
    9·2 answers
  • Find the value of 3 square root of 1000​
    7·2 answers
  • 1) (3m-2)+2-m+3 please help algebra​
    15·1 answer
  • Which would be the correct answer!
    12·1 answer
  • PLEASE HELP I ONLY HAVE ONE HOUR PLEASE HELP PLEASE
    11·1 answer
  • 2-Bromo-3-methyl pentanoic acid​
    7·1 answer
  • which statement about the points (2, 5) and (-2, 5) is true plot the points on a coordinate plane to help you answer the questio
    15·1 answer
  • A cube with a side length of ___ unit is called a unit cube
    11·1 answer
  • Emmy enjoys mixing and selling scented oils. She recently spent $345.60 on a box of scented oils. She made a profit of $134.60 b
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!