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3 years ago

5

Can you help me whith number two?

2 answers:

trapecia [35]3 years ago

7 0

The answer is C

Just divide by 100 and multiply by whatever the percent is in that case.

Hope this helps!

Otrada [13]3 years ago

5 0

14.47 is the closest to the answer. To get the answer use 72.34×.20 getting 14.468 or 14.47

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Another explanation is-

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julia-pushkina [17]

Complete Question

The complete question is shown on the first uploaded

Answer:

$y_1$ is not a solution of the differential equation

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Step-by-step explanation:

The differential equation given is $y'' + y' = cos2x$

Let consider the first equation to substitute

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So

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$y_1'' + y_1' = -2sinx$

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$y_2'' = -4cos2x$

So

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So

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Let consider the third equation to substitute

$y_3 = sin 2x$

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So

$y_3'' + y_3' = -4sin2x - 2cos2x$

So

$-4sin2x - 2cos2x \ne cos2x$

This means that $y_3$ is not a solution of the differential equation

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3 years ago