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1 year ago

What is (o.4+1.6) x 6 answer

Mathematics

1 answer:

Gekata [30.6K]1 year ago

3 0

Hey there!

(0.4 + 1.6) × 6

= 2 × 6

≈ 2 + 2 + 2 + 2 + 2 + 2

≈ 4 + 4 + 4

≈ 8 + 4

≈ 12

Therefore, your answer is: 12

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

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The quantity of salt at time t is $m_{salt} = (60)\cdot (30 - 29.833\cdot e^{-\frac{t}{10} })$ , where t is measured in minutes.

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Where:

$c$ - The salt concentration in the tank, as well at the exit of the tank, measured in $\frac{pd}{gal}$ .

$\frac{dc}{dt}$ - Concentration rate of change in the tank, measured in $\frac{pd}{min}$ .

$V$ - Volume of the tank, measured in gallons.

The following first-order linear non-homogeneous differential equation is found:

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This equation is solved as follows:

$e^{\frac{t}{10} }\cdot \left(\frac{dc}{dt} +\frac{1}{10} \cdot c \right) = 3 \cdot e^{\frac{t}{10} }$

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$e^{\frac{t}{10} }\cdot c = 30\cdot e^{\frac{t}{10} } + C$

$c = 30 + C\cdot e^{-\frac{t}{10} }$

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$c_{o} = 0.167\,\frac{pd}{gal}$

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$0.167 = 30 + C$

$C = -29.833$

The solution of the differential equation is:

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