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TEA [102]
3 years ago
13

Distribute: 5(x - 9)

Mathematics
2 answers:
Leni [432]3 years ago
4 0
=5x-45
multiply the 5 in
Evgen [1.6K]3 years ago
3 0
5 * x = 5x
5 * -9 = -45
so
5x - 45
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Answer:

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Six less than seven times a number is equal to-12
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A recent survey indicated that the average amount spent for breakfast by business managers was $9.33 with a standard deviation o
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Answer:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

Replacing the info given we got:

t=\frac{9.41-9.33}{\frac{0.24}{\sqrt{81}}}=3    

Step-by-step explanation:

Information given

\bar X=9.41 represent the sample mean

s=0.24 represent the sample standard deviation

n=81 sample size  

\mu_o =9.33 represent the value to verify

\alpha=0.05 represent the significance level

t would represent the statistic

p_v represent the p value

Hypothesis to test

We want to test if the true mean is higher than 9.33, the system of hypothesis would be:  

Null hypothesis:\mu \leq 9.33  

Alternative hypothesis:\mu > 9.33  

The statistic is given by:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

Replacing the info given we got:

t=\frac{9.41-9.33}{\frac{0.24}{\sqrt{81}}}=3    

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4 years ago
You are trapped in a dark cave with three indistinguishable exists on the walls. One of the exits takes you 3 hours to travel an
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Answer:

6 HOURS

Step-by-step explanation:

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