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borishaifa [10]
3 years ago
14

Is 2x+5y+7z a trinomial?

Mathematics
1 answer:
stich3 [128]3 years ago
4 0

Answer:

yes

Step-by-step explanation:

Trinomial means the equation consists of 3 terms therefore 2x+5y+7z is a trinomial.

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The mean yield of corn in the United States is about 135 bushels per acre. A survey of 40 farmers this year gives a sample mean
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Answer:

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Step-by-step explanation:

Data given and notation  

\bar X=138.8 represent the sample mean

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t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

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And the z statistic is given by:

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And replacing we got:

z = \frac{138.8-135}{\frac{10}{\sqrt{40}}}= 2.403

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