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In-s [12.5K]
3 years ago
12

-1/5x=6 can some one help me

Mathematics
2 answers:
Montano1993 [528]3 years ago
7 0
The answer you want is x = -30
vfiekz [6]3 years ago
6 0

Answer: x = 30

Explanation:

This equation is almost solved, it is on the last part of the equation.

First thing you must always do is write the equation as you see it, making sure you don’t miss any plus or minus signs:

-1/5x = 6

Next, you must do the math. All that you must do is divide the the side that doesn’t have x with the side that does:

6 ÷ -1/5x

Change the fraction into decimal ( that is optional, but it makes that math easier):

6 ÷ 0.2x = 30x

Your answer is 30x

Hope this helps! :)

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Step-by-step explanation:

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Help with this immediately​
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3 years ago
10 more than a number c is 3
Eddi Din [679]

Answer:

c is -7

Step-by-step explanation:

-7 + 10 = 3

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2 years ago
Lorraine and her family went to the beach for 4 hours on Sunday. They left the beach at 4:20 P.M. What time did they arrive at t
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3 0
3 years ago
A business school has a goal that the average number of years of work experience of its MBA applicants is more than three years.
gizmo_the_mogwai [7]

Answer:

z=\frac{3.1-3}{\frac{2.449}{\sqrt{47}}}=0.280    

p_v =P(z>0.280)=0.390  

If we compare the p value and the significance level assumed \alpha=0.01 we see that p_v>\alpha so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can't conclude that the height of men actually its NOT significant higher than 0.3 at 1% of signficance.  

Step-by-step explanation:

Data given and notation  

\bar X=3.1 represent the sample mean

\sigma=\sqrt{6} represent the sample standard deviation for the sample

n=47 sample size  

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

\alpha 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 is higher than 3, the system of hypothesis would be:  

Null hypothesis:\mu \leq 3  

Alternative hypothesis:\mu > 3  

If we analyze the size for the sample is > 30 and we know the population deviation so is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}  (1)  

z-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:  

z=\frac{3.1-3}{\frac{2.449}{\sqrt{47}}}=0.280    

P-value

Since is a one side test the p value would be:  

p_v =P(z>0.280)=0.390  

Conclusion  

If we compare the p value and the significance level assumed \alpha=0.01 we see that p_v>\alpha so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can't conclude that the height of men actually its NOT significant higher than 0.3 at 1% of signficance.  

3 0
3 years ago
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