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
9

8) Solve for x. -3x - 8 = 10 A) -54 B) -6 C) 6 D) 5 54

Mathematics
1 answer:
lakkis [162]3 years ago
3 0

Answer:

X= -6 (B)

Step-by-step explanation:

-3x=18

X=18/-3

X= -6

You might be interested in
I need to know what 2 numbers go in here to equal 20​
mr Goodwill [35]

Answer:

4 and 2

Step-by-step explanation:

4x4+2x2

16+4=20

3 0
3 years ago
Read 2 more answers
Help me on this to I'm begging u I'm so sorry I'm up so late but the school I'm in is wack ​
lianna [129]

Answer:

Answer below

Step-by-step explanation:

1. C 2

2. The temperature from 15°F to -6°F has changed by 21°F

5. C $37

I hope this helps

6 0
3 years ago
HHEEELPPP me PLEASEE ill mark you brainlyyy
Aleksandr-060686 [28]
Hi The answer is 768
4 0
3 years ago
Read 2 more answers
Suppose a local manufacturing company claims their production line has a variance of less than 9.0. A quality control engineer d
Alexxx [7]

Answer:

\chi^2 =\frac{35-1}{9} 2.12^2 =16.979

p_v =P(\chi^2

If we compare the p value and the significance level provided we see that p_v so on this case we have enough evidence in order to reject the null hypothesis at the significance level provided. And that means that the population variance is significantly lower than 9

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

n=35 represent the sample size

\alpha=0.01 represent the confidence level  

s =2.12 represent the sample deviation obtained

\sigma_0 =3 represent the value that we want to test

Null and alternative hypothesis

On this case we want to check if the population variance specification is lower than 9 and the deviation lower than 3, so the system of hypothesis would be:

Null Hypothesis: \sigma^2 \geq 9

Alternative hypothesis: \sigma^2

Calculate the statistic  

For this test we can use the following statistic:

\chi^2 =\frac{n-1}{\sigma^2_0} s^2

And this statistic is distributed chi square with n-1 degrees of freedom. We have eveything to replace.

\chi^2 =\frac{35-1}{9} 2.12^2 =16.979

Calculate the p value

In order to calculate the p value we need to have in count the degrees of freedom , on this case df= n-1= 35-1=34. And since is a left tailed test the p value would be given by:

p_v =P(\chi^2

In order to find the p value we can use the following code in excel:

"=CHISQ.DIST(16.979,34,TRUE)"

Conclusion

If we compare the p value and the significance level provided we see that p_v so on this case we have enough evidence in order to reject the null hypothesis at the significance level provided. And that means that the population variance is significantly lower than 9

6 0
3 years ago
A local nonprofit organization is selling popcorn to raise money for hurricane relief. The organization paid $4 per bag for the
Bezzdna [24]
Percent markup is 125% sorry if I’m wrong
5 0
3 years ago
Other questions:
  • What equation has an a-value of 1 , a b-value of -3 and a c-value of -5
    15·1 answer
  • In a cirde, what does the ratio A/^2 represent?
    11·1 answer
  • A bag contains 9 red chips and 5 blue chips. two chips are selected randomly without replacement from the bag. what is the proba
    11·1 answer
  • Ortions Review
    15·2 answers
  • Please answer this correctly
    15·2 answers
  • Susan bought a total of seventeen candy bars for $10.83. If the peanut bars cost 69¢ each and the choco-
    12·2 answers
  • Find the value of f(x) when x = 0<br>f(0) =(0)²+4(0)-1​
    9·2 answers
  • Find the volume of the right cone.
    7·1 answer
  • Find the surface area of the cylinder to the nearest whole number. The figure is not drawn to
    10·1 answer
  • Help help help please please
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!