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jekas [21]
3 years ago
13

The volume of a fish tank is 70 cubic feet. If the density is 0.4 fish over feet cubed, how many fish are in the tank?

Mathematics
2 answers:
Triss [41]3 years ago
8 0

Answer:

28 fish

Step-by-step explanation:

The density here is written as fish over feet cubed, so this equation can be written as 0.4=x fish/70 cubic feet

To get x alone you must multiply 0.4 by 70 to get 28, which represents the number of fish

labwork [276]3 years ago
7 0

Answer:

28 fish is the correct answer

Step-by-step explanation:.

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Step-by-step explanation:

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What is 8/10 divided by 1 5/6
yulyashka [42]
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Consider the polynomial P(x)=x⁴+3x³-28x²-36x+144. Write the equation of P in factored form.
garik1379 [7]

Answer:

P(x)=(x-2)(x-4)(x+3)(x+6)

Step-by-step explanation:

Given: P(x)=x⁴+3x³-28x²-36x+144

It is a polynomial with degree 4.

It should maximum four factor.

Hit and trial error method.

Put x = 2 into P(x)

P(2)=2⁴+3×2³-28×2²-36×2+144

P(2) = 0

So, x-2 would be factor of P(x)

Now divide x⁴+3x³-28x²-36x+144 by x-2 to get another factors

(x^4+3x^3-28x^2-36x+144)\div (x-2) = x^3+5x^2-18x-72

P(x)=(x-2)(x^3+5x^2-18x-72)

Put x = 4

P(4) = 0

now divide x^3+5x^2-18x-72 by x-4

(x^3+5x^2-18x-72)\div (x-4) = x^2+9x+18

P(x)=(x-2)(x-4)(x^2+9x+18)

Now factor x^2+9x+18

\Rightarrow x^2+9x+18

\Rightarrow (x+6)(x+3)

Complete factor of P(x)

P(x)=(x-2)(x-4)(x+3)(x+6)

7 0
3 years ago
What is 6+14r-12r+3?
Ugo [173]
<span><span><span>6+<span>14r</span></span>−<span>12r</span></span>+3

</span><span>=<span><span><span><span>6+<span>14r</span></span>+</span>−<span>12r</span></span>+3

</span></span>Combine Like Terms:

<span>=<span><span><span>6+<span>14r</span></span>+<span>−<span>12r</span></span></span>+3

</span></span><span>=<span><span>(<span><span>14r</span>+<span>−<span>12r</span></span></span>)</span>+<span>(<span>6+3</span>)

Your answer would be:
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2r</span>+<span>9

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5 0
2 years ago
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Does each equation represent exponential decay or exponential growth?
Elden [556K]

Answer:

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Step-by-step explanation:

A function is exponential if it has the independent variable in an exponent. g(x) is a linear function, not an exponential function.

__

An exponential function is a growth function if the coefficient of the variable is positive and the base of the exponent is greater than 1. It is a decay function if the exponent is positive and the base is less than 1.

The first two functions are decay functions. The remaining four exponential functions are growth functions.

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