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Hoochie [10]
3 years ago
5

-1/5(x-4)=-2 solve for x plz help !!!!

Mathematics
1 answer:
grandymaker [24]3 years ago
8 0
The answer is x=14.......                                                     
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Help me pleaseeeeeee
Vikki [24]
I think they are equivalent (A) but u should get a second opinion.
3 0
3 years ago
Among a sample of 55 male soldiers the average shower time was found to be 2.95 minutes and the population standard deviation is
Oksanka [162]

Answer: -3.0593

Step-by-step explanation:

The test statistic for the difference between two population mean (when population standard deviations \sigma_1\ \&\ \sigma_2  are known ) is given by :-

z=\dfrac{\overline{x}_1-\overline{x}_2}{\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}}

where ,

n_1\ \&\ n_2 = Sample sizes taken from two  populations 1 and 2.

\overline{x}_1-\overline{x}_2 = Difference between two Sample mean.

\sigma_1\ \&\ \sigma_2 = Standard deviations of populations 1 and 2.

As per given , we have

n_1=55\ \&\ n_2=58

\overline{x}_1=2.95\ \&\ \overline{x}_2=3.3

\sigma_1=0.65\ \&\ \sigma_2=0.56

We assume that the data follows a normal distribution.

Then, the test statistic will be :-

z=\dfrac{2.95-3.3}{\sqrt{\dfrac{(0.65)^2}{55}+\dfrac{(0.56)^2}{58}}}\\\\=\dfrac{-0.35}{\sqrt{0.0130887}}\\\\=\dfrac{-0.35}{0.1144059}=3.05928278174\approx-3.0593  

Hence, the test statistic= -3.0593

5 0
3 years ago
Please help me with questions 3 and 4 I will give brainlist to the first answer that is the best.
gogolik [260]

Answer:

25 possible outomes?

Step-by-step explanation:

hope its right?

8 0
3 years ago
Read 2 more answers
A long year end status report for work is 136 pages long. You need to print 19 copies for a meeting next week. How much is the p
tatyana61 [14]

Answer:

$19.60

Step-by-step explanation:

Given data

number of pages= 136 pages

number of copies = 19 copies

Hence 19 copies make a total of = 136*19

=2584 pages

hence if 500 pages cost $3.80

  then   2584 pages will cost x

cross multiply

500x= 2584*3.8

500x=9819.2

Divide both sides by 500

x= 9819.2/500

x= 19.6384

x=$19.60

It will cost $19.60

3 0
3 years ago
Is it necessary to rename 4 1/4 if you subtract 3/4 from it
Nesterboy [21]
No because they both have the same denominator!
5 0
3 years ago
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