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1 year ago

Which ratios form a proportion

Mathematics

1 answer:

Lelu [443]1 year ago

3 0

Answer:

Step-by-step explanation:

To form a proportion, you need two equal ratios.

Divide the numerator by the denominator of all fractions.

Any two fractions that are equal are a proportion.

4/9 = 0.4444...

9/4 = 2.25

Fractions are not equal. Not a proportion.

4/10 = 0.4

10/25 = 0.4

Fractions are equal. Proportion

4/11 = 0.363636...

6/13 = 0.46153846...

Fractions are not equal. Not a proportion.

I can't read the fractions, but do the same I did above.

Divide each numerator by the denominator and compare the decimals. If they are equal its a proportion. If theya re not equal, it is not a proportion.

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$f(x)=xe^{-x^2/128}$
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At the critical points, you get

$f''(-8)=\dfrac1{4\sqrt e}>0$
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So you have a minimum at $\left(-8,-\dfrac8{\sqrt e}\right)$ and a maximum at $\left(8,\dfrac8{\sqrt e}\right)$ .

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