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bekas [8.4K]
2 years ago
7

a submarine descends 480 ft and 24 seconds the submarines elevation changes at a constant rate what is the elevation change of t

he submarine after 8 Seconds​
Mathematics
1 answer:
Vlad1618 [11]2 years ago
7 0

Answer:

The submarine would be 900 below the ocean surface after 12 minutes assuming it started its descent at the surface of the ocean.

Step-by-step explanation:

The formula for distance traveled (in this case the distance a submarine descends) over a period of time is:

d

=

r

⋅

t

where

d

is the distance traveled (or descended),

r

is the rate of travel and

t

is the time.

In this problem we are told the rate,

r

is 75 feet per minute. And, we are told the time,

t

, to calculate for which is 12 minutes.

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Andreas93 [3]

Integration Formula:

\int\limits {x}^{n} \, dx =\frac{x^{n+1}}{n+1} + C

Integrate each term:

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\int\ {x} \, dx =\frac{x^2}{2}

\int\ {5} \, dx = 5x

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Your limits are 1 and 2. Substitute both numbers into the equation and minus them from each other.

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-

x = 1:

[tex]\frac{\frac{1}{3} - \frac{1}{2}-5 }{ \frac{1}{2}+2}[/tex]

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-

x = 1: \frac{\frac{8}{3} - 2-10 }{ 2+4}

=

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Now convert all the answers to integers and see which one matches -1.212317928:

Because it's a negative number, we know it can only be A or B.

(A) = -1.212317928

(B) = -1.19047619

The answer is A: -\frac{3}{2} +In\frac{4}{3}

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