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hodyreva [135]
3 years ago
7

BRAINLIEST TO WHOEVER ANSWERS THIS CORRECTLY WITH EXPLANATION PLEASE ASAP!!!

Mathematics
1 answer:
Drupady [299]3 years ago
5 0
I think it’s either # 3 or #4 I tried dividing 2401 by 10 and it is 240.1. Hope this helps

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A tank contains 300 liters of fluid in which 40 grams of salt is dissolved. Brine containing 1 gram of salt per liter is then pu
bonufazy [111]

Answer:

A(t) = 300 -260e^(-t/50)

Step-by-step explanation:

The rate of change of A(t) is ...

A'(t) = 6 -6/300·A(t)

Rewriting, we have ...

A'(t) +(1/50)A(t) = 6

This has solution ...

A(t) = p + qe^-(t/50)

We need to find the values of p and q. Using the differential equation, we ahve ...

A'(t) = -q/50e^-(t/50) = 6 - (p +qe^-(t/50))/50

0 = 6 -p/50

p = 300

From the initial condition, ...

A(0) = 300 +q = 40

q = -260

So, the complete solution is ...

A(t) = 300 -260e^(-t/50)

___

The salt in the tank increases in exponentially decaying fashion from 40 grams to 300 grams with a time constant of 50 minutes.

6 0
3 years ago
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If f(x)=x+7 and g(x)=2x-3 what is (f-g)(x)
aalyn [17]

Answer:

-x + 10

Step-by-step explanation:

(x + 7) - (2x-3)

x + 7 - 2x - 3

x - 2x

-x + 7 + 3

-x + 10

4 0
3 years ago
F(x) = -2^2 +2 +13 Find f(9)​
saveliy_v [14]

Answer:

jhvghvhgvvvvvvvvvvvvvvvvvvvv

Step-by-step explanation:

8 0
3 years ago
Help me please this is the last question there may be more coming
Mariana [72]

Answer:

I dont see the picture sry

4 0
2 years ago
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3x + 2 = -55 i need all the steps
Paha777 [63]

Answer:

-19

Step-by-step explanation:

3x+2 = -55

   -2         -2

3x = -55-2

3x = -55+-2

3x = -57

/3      /3

x=-19

4 0
3 years ago
Read 2 more answers
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