2 years ago

Y do students have to go to school, I mean Do we have to learn we can learn at home ∞∵

2 answers:

8 0

School sets you up for life, it teaches basic lessons like math and grammar. Not to mention it helps kids socialize (critical human trait).

AnnyKZ [126]2 years ago

3 0

You go to school to get a education, you can home school i guess?

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valentinak56 [21]

Answer:

true

Explanation:

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PLEASE ANSWER AS SOON AS POSSIBLE! 25 Pts

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Can someone help me with this

Feliz [49]

Answer:

phosphorous- 5

calcium- 2

nitrogen- 3 or 5

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argon- 8

potassium- 1

helium- 2

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sulfur- 6

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2 years ago

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2 years ago

fish tank initially contains 35 liters of pure water. Brine of constant, but unknown, concentration of salt is flowing in at 5 l

weeeeeb [17]

Answer:

Therefore, the rate of change in the amount of salt is $\frac{dx}{dt} =( 5c}{ - \frac{x }{20})$

$\frac{grams }{min}$

Explanation:

Given:

Initial volume of water $V = 35$ lit

Flowing rate = 5 $\frac{Lit}{min}$

The rate of change in the amount of salt is given by,

$\frac{dx}{dt} =$ ( Rate of salt enters tank - rate of sat leaves tank )

Since tank is initially filled with water so we write that,

$x(0) = 0$

Let amount of salt in the solution is $c$ ,

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Therefore, the rate of change in the amount of salt is $\frac{dx}{dt} =( 5c}{ - \frac{x }{20})$

$\frac{grams }{min}$

7 0

2 years ago