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Mrac [35]
3 years ago
9

A diver went 25.65 feet below the surface of the ocean and then 16.5 feet further down he then rose 12.45 feet. Write and solve

an expression to find the divers new depth
Mathematics
2 answers:
trasher [3.6K]3 years ago
6 0
X= 25.65 + 16.5 - 12.45
X=29.70
WINSTONCH [101]3 years ago
4 0

Answer:

-29.7 feet that is 29.7 feet below the ocean surface.

Step-by-step explanation:

Let x represent divers new depth.

We have been given that a diver went 25.65 feet below the surface of the ocean. This means that the diver's elevation will be negative 25.65 with respect to surface of ocean.

Again, the diver went down 16.5 feet, so the diver's elevation after second dive would be -25.65+(-16.5).

Finally, the diver rose 12.45 feet. This means that diver's elevation at the 3rd dive would be positive 12.45 feet.

\text{Diver's final elevation}=-25.65+(-16.5)+12.45

x=-42.15+12.45

x=-29.7

Therefore, the diver's new depth would be -29.7 feet that is 29.7 feet below the ocean surface.

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6 0
3 years ago
Carter Motor Company claims that its new sedan, the Libra, will average better than 26 miles per gallon in the city. Use μ, the
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Answer:

The true average mileage of the Libra  Using Null hypothesis is as ;

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Step-by-step explanation:

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Libra, will average better than 26 miles per gallon in the city

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Average mileage of the Libra.

Solution:

This problem is related to the null hypothesis  and alternate hypothesis.

i.e Null Hypothesis is the statement which is true and statement which contradictory is called alternate hypothesis.

<em>“reject H0” if the sample information favors the alternative hypothesis. </em>

<em>“do not reject H0” / “decline to reject H0” if the sample information is insufficient to reject the null hypothesis</em>

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