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beks73 [17]
2 years ago
7

Help me please !!!!!!!

Mathematics
1 answer:
sveticcg [70]2 years ago
4 0

Answer:

6556

Step-by-step explanation:

its this

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A large mixing tank initially contains 1000 gallons of water in which 30 pounds of salt have been dissolved. Another brine solut
serg [7]

Answer:

(B)\dfrac{dA}{dt}=8-0.004A

Step-by-step explanation:

Volume of fluid in the tank =1000 gallons

Initial Amount of Salt in the tank, A(0)= 30 pounds

Incoming brine solution of concentration 2 pounds of salt per gallon is pumped in at a rate of 4 gallons per minute.

Rate In=(concentration of salt in inflow)(input rate of brine)

=(2\frac{lbs}{gal})( 4\frac{gal}{min})=8\frac{lbs}{min}

The resulting mixture is pumped out at the same rate, therefore:

Rate Out =(concentration of salt in outflow)(output rate of brine)

=(\frac{A(t)}{1000})( 4\frac{gal}{min})=\frac{A}{250}

Therefore:

The rate of change of amount of salt in the tank,

\dfrac{dA}{dt}=$Rate In-Rate out\\\dfrac{dA}{dt}=8-\dfrac{A}{250}\\\dfrac{dA}{dt}=8-0.004A

5 0
3 years ago
x, y, a, and b are positive integers. When x is divided by y, the remainder is 6. When a is divided by b, the remainder is 9. Wh
Mademuasel [1]

Answer:

y + b > 15

Step-by-step explanation:

given data

positive integers = x, y, a, b

x divided by y then remainder = 6

a divided by b then remainder = 9

to find out

possible value for y + b

solution

we know that here when  x divided by y then remainder is 6

its mean y is greater than 6 and when a divided by b then remainder is 9

so its mean b is greater than 9

and we know remainder is less than divisor

so here y + b must be greater than = 6 + 9

y + b > 15

5 0
3 years ago
(5x+37)"<br> S<br> W<br> (3x-9)<br> Р<br> T<br> What is the value of x?
svp [43]

Step-by-step explanation:

well, the arcs WS and ST together are the full half-circle and therefore 180°.

that means

5x + 37 + 3x - 9 = 180

8x + 28 = 180

8x = 152

x = 19

5 0
2 years ago
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Natasha_Volkova [10]

Answer:   1. 447

                2. 572

                3. 257

               

Step-by-step explanation:

3 0
2 years ago
How do I find the variables here? ;-;
ELEN [110]

Answer:

64 times 4 and add the x at the end  = 256x

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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