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Brut [27]
3 years ago
10

How do you divide a fraction by a fraction?

Mathematics
1 answer:
Vaselesa [24]3 years ago
8 0

Answer:

Step-by-step explanation:you flip the second fraction and multiply that

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We want to have a survey and ask people working for IT companies if they prefer Skype to mobile phones for making calls. We want
weqwewe [10]

Answer:

For this case we want to test if in IT companies more than 20% of employees prefer to use Skype rather than a mobile phone (alternative hypothesis) and the complement would be the the null hypothesis. So then the system of hypothesis are:

Null hypothesis: p =0.2

Alternative hypothesis: p >0.2

And for this case we should use a righ tail test based on the alternative hypothesis.

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".  

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".  

Solution to the problem

For this case we want to test if in IT companies more than 20% of employees prefer to use Skype rather than a mobile phone (alternative hypothesis) and the complement would be the the null hypothesis. So then the system of hypothesis are:

Null hypothesis: p =0.2

Alternative hypothesis: p >0.2

And for this case we should use a righ tail test based on the alternative hypothesis.

6 0
3 years ago
What is the greatest common factor of 35,10
storchak [24]

Answer:

5

Step-by-step explanation:

Factors of 35: 1,5,7,35

Factors of 10: 1,2,5,10

5 is the greatest common factor.

4 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST!!
Snowcat [4.5K]
15/10 = 18-x/x is the ratio of the larger to the smaller triangle

Cross multiply:
15x = 10(18 - x)
15x = 180 - 10x
25x = 180
x = 7.2

Plug back in to check
15/10 = 1.5

18-7.2/7.2 = 10.8/7.2 = 1.5 :)
6 0
3 years ago
3
denis23 [38]
I think it might be A and C
8 0
3 years ago
Read 2 more answers
Evaluate:45/60+12/60-4/60
sdas [7]
Remember to incorporate Bimdas, into you calculation and ensure where the addition and subtraction occur you work from left to right.

3 0
3 years ago
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