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Mice21 [21]
3 years ago
5

Show that (3√2-1)² + (3+√2)² is an integer and find its value​

Mathematics
1 answer:
Lorico [155]3 years ago
8 0

Answer:

value: 30

Step-by-step explanation:

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4<br>Order these decimals, starting with the smallest<br>7.96<br>9.61<br>9.534<br>9.5<br>9.53​
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Answer:

7.96,9.5,9.53,9.534,9.61

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2 years ago
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Solve the equation for x by find the A , B , C of the quadratic then applying the quadratic formula 


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it takes an air pump 4.0 minutes to fill a twin sized air mattress (39 by 8.75 by 75 inches). How long will it take to fill a qu
Ivahew [28]

Volume of twin sized mattress =

39* 8.75* 75 = 25593.35 cubic inch

Volume of queen sized mattress =

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7 0
3 years ago
By visiting homes door-to-door, a municipality surveys all the households in 31 randomly-selected neighborhoods to see how resid
monitta

Answer:

Cluster Sample

Step-by-step explanation:

Sometimes, a survey may involve people in a widespread geographical location. Taking samples from all part of the location may involve higher cost and even difficulty in accessing the whole area. Researchers therefore use a type of sampling method that help in overcoming this difficulty and still get results that can be used to judge the whole population.

This type of sampling is called cluster sampling. Cluster sampling involves sharing your population into clusters and randomly selecting two or more of the clusters. The researcher then samples from only the selected clusters.

In the question above, the population is already shared into clusters, in the form of neighbourhoods. The municipality then randomly selected 31 neighbourhoods out of the whole neighbourhoods in the city, just like in cluster sampling, then samples from only the selected neighbourhood. This is why the selected samples are cluster samples.

6 0
3 years ago
Solve the equation negative 18 equals x plus 10
pentagon [3]

-18=x+10

move +10 to the other side

sign changes from +10 to -10

-18-10=x+10-10

-18-10=x

Answer: x=-28

4 0
4 years ago
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