Mathematics: Acity bus drives 160 miles in 8 hours. what is the average rate of speed in miles per hour?

Given:The function is:To find:The all the real and non-real roots of the given function.Solution:We have,For roots, ,Taking square root on both sides, we get The roots of the given function are -7i and 7i.Therefore, the correct option is B....

Acity bus drives 160 miles in 8 hours. what is - id16081444834, jdanstudy9528

Ответ:

Galaxystyx

26.03.2022

Mathematics

Given:

The function is:

f(x)=x^2+49

To find:

The all the real and non-real roots of the given function.

Solution:

We have,

f(x)=x^2+49

For roots, f(x)=0 ,

x^2+49=0

x^2=-49

Taking square root on both sides, we get

$x=\pm \sqrt{-49}$

$x=\pm \sqrt{-1}\sqrt{49}$

$x=\pm 7i$ $[\because \sqrt{-1}=i]$

The roots of the given function are -7i and 7i.

Therefore, the correct option is B.

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Acity bus drives 160 miles in 8 hours. what is the average rate of speed in miles per hour?

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