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lesantik [10]
3 years ago
5

A large aquarium should contain 10,000 liters of water when it is filled correctly. Fish will get sick if the aquarium gets down

to 4,000 liters or less. One day over the weekend, there is an accident, and the tank cracks in 4 places, causing water to empty out of the aquarium at a rate of 20.5 liters per hour. The aquarium workers did not catch the leaks until 2 days later. How much water was left in the tank when the aquarium workers finally caught the leak? Based on the level of water, were fish sick?
Mathematics
1 answer:
pashok25 [27]3 years ago
8 0

Answer:

9016 litres left

Step-by-step explanation:

The fish were not sick.

You would multiply 20.5 by 48 which is the amount of hours in 2 days then subtract that amount from 10000 to see how much is left

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19 trees should be planted to maximize the total

<h3>How many trees should be planted to maximize the total</h3>

From the question, we have the following parameters:

Number of apples, x = 18

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When the number of apple trees is increased (say by x).

We have:

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The yield decreases by four apples per tree.

So, we have

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So, the profit function is

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This gives

P(x) = (18 + x) *(80 - 4x)

Expand the bracket

P(x) = 1440 - 72x + 80x - 4x^2

Differentiate the function

P'(x) = 0 - 72 + 80 - 8x

Evaluate the like terms

P'(x) = 8 - 8x

Set P'(x) to 0

8 - 8x = 0

Divide through by 8

1 - x = 0

Solve for x

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Recall that:

Trees = 18 + x

So, we have

Trees = 18 + 1

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Trees = 19

Hence, 19 trees should be planted to maximize the total

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brainly.com/question/12120831

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4 0
1 year ago
Which values of k would cause this system of equations to have no solution? Check all that apply.
xeze [42]

Answer:

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Step-by-step explanation:

Answer In cases of two equations having two unknown variables the simultaneous method of solving the equations is adopted.

Supposing “0” as the value of “k” we will have the equation as 3x+2y=0

Then separating variable x will give, x= -2y/3

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3/15 + 5/15 = 8/15

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