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3 years ago

Please help thank you

Mathematics

2 answers:

OleMash [197]3 years ago

8 0

Answer:

your answer for K should be 12

N76 [4]3 years ago

3 0

Answer:

k=12

Step-by-step explanation:

hope this helps :))

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2 years ago

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) The density of oil in a circular oil slick on the surface of the ocean at a distance of r meters from the center of the slick

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Answer:

Therefore the mass of the of the oil is 409.59 kg.

Step-by-step explanation:

Let us consider a circular disk. The inner radius of the disk be r and the outer diameter of the disk be (r+Δr).

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=The area of the outer circle - The area of the inner circle

= $\pi (r+\triangle r)^2- \pi r^2$

$=\pi [r^2+2r\triangle r+(\triangle r)^2-r^2]$

$=\pi [2r\triangle r+(\triangle r)^2]$

Since (Δr)² is very small, So it is ignorable.

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We know,

Mass= Area× density

$=(2r \pi \triangle r)(\frac{40}{1+r^2}})$

Total mass $M=\sum_{i=1}^n \frac{80r_i\pi }{1+r^2}\triangle r_i$

Therefore

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3 years ago

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Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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Ann goes once every 12 days

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