2 years ago

PLSSSSS HELPPPPPP ASAP

1 answer:

7 0

The answer is -3

Multiply 3 on both sides to get rid of the fraction

x+6=3x+12

Subtract 12 on both sides

x-6=3x

Subtract x on both sides

-6=2x

Divide 2 on both sides

x=-3

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We have

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so this is indeed a difference of squares. Factorizing would give

$81-49n^4=(9-7n^2)(9+7n^2)$

making the answer D.

We can further factor the first term here and write

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Answer:

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Step-by-step explanation:

Let suppose that tumor has an spherical geometry, whose volume ( $V$ ) is calculated by:

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$\%V = \frac{\Delta V}{V_{o}} \times 100\,\%$

Where:

$\Delta V$ - Absolute decrease in the volume of the tumor.

$V_{o}$ - Initial volume of the tumor.

The absolute decrease in the volume of the tumor is:

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The percentage decrease is finally simplified:

$\%V = \left[1-\left(\frac{R_{f}}{R_{o}}\right)^{3} \right]\times 100\,\%$

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