3 years ago

Expand the binomial (3x+6)^3

Mathematics

1 answer:

tatyana61 [14]3 years ago

4 0

27x^3 + 162x^2 + 324x + 216

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Answer:

11.45 lumens

Step-by-step explanation:

We are given that

$log(I/12)=-0.00235x$

Where x=Depth

I=Intensity of light

We have to find the intensity of the light at a depth of 20 feet.

Substitute the value of x

$log(I/12)=-0.00235\times 20$

$log(I/12)=-0.047$

$\frac{I}{12}=e^{-0.047}$

$I=12e^{-0.047}$

$I=11.45 Lumens$

Hence, the intensity of the light (in lumens) at a depth of 20 feet=11.45 lumens

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4 years ago

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Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

Since they have given you x = 4, simply sub it into the equation,

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