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3 years ago

Solve using elimination method

Mathematics

1 answer:

Anon25 [30]3 years ago

7 0

X+y=8
2x^2-y=-5
elimination method means you link the 2 equations together to make one
these two already have y in the perfect form where you can cancel it out +y and -y so no need to perform any other action to a certain equation.. all you need to do is add them now
2x^2+x=3

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Step-by-step explanation:

For this case we have a random variable with the following parameters:

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From the empirical rule we know that within one deviation from the mean we have 68% of the values, within two deviations we have 95% and within 3 deviations we have 99.7% of the data.

We want to find the following probability:

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And replacing we got

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For the third case:

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And replacing we got:

$z= \frac{29-34}{2.5}= -2$

$z= \frac{36.5-34}{2.5}= 1$

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