3 years ago

USE DISTRIBUTIVE PROPERTY -n(12n + 11) + 15

Mathematics

1 answer:

12345 [234]3 years ago

7 0

Answer:

-12n² - 11n + 15

Step-by-step explanation:

You multiply the -n with both 12n and 11, i.e., you distribute it over the terms in the brackets.

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Step-by-step explanation:

The hypothesis for this test can be defined as follows:

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$t=\frac{\bar x_{1}-\bar x_{2}}{\sqrt{\frac{s^{2}_{1}}{n_{1}}+\frac{s^{2}_{2}}{n_{2}}} }=\frac{55-44}{\sqrt{\frac{15^{2}}{90}+\frac{16^{2}}{86} }}=4.70$

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