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Lera25 [3.4K]
3 years ago
7

Find each missing length to the nearest tenth.​

Mathematics
1 answer:
Llana [10]3 years ago
6 0

Answer:

8.944

Step-by-step explanation:

To find the missing Length, Use Pythagorean Theorem!

a^2+b^2=c^2

4^2+8^2=c^2

16+64=c^2

80=c^2

\sqrt{80} =8.944

so it is approximately 10 but not quiet

hope this helps

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Answer:

<em>Test statistic </em>

<em>               </em>t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }  

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Step-by-step explanation:

<u><em>Step(i):-</em></u>

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Given data

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Given sample standard deviation(S) = 0.661

<u><em>Step(ii):-</em></u>

<em>Null hypothesis : H:  (μ) = 8.0</em>

<em>Alternative Hypothesis :H:(μ) > 8.0</em>

<em>Degrees of freedom = n-1 = 8-1=7</em>

<em>Test statistic </em>

<em>               </em>t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }<em></em>

<em>              </em>t = \frac{8.25 -8.0}{\frac{0.661}{\sqrt{8} } }<em></em>

<em>            t =  1.076</em>

<em>Critical value </em>

<em>                    t₍₇,₀.₀₅₎   = 2.3646</em>

<em>The calculated value   t =  1.076 < 2.3646 at 0.05 level of significance</em>

<em>Null hypothesis is accepted</em>

<em>Test the hypothesis that the true mean quiz score is 8.0 against the alternative that it is not greater than 8.0</em>

<em></em>

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Answer:

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9x2 is 18, so he can rent a bike for nine days if the rent is $2

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