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expeople1 [14]
3 years ago
8

Many physical processes are exponential in nature. A typical way of cleaning a tank of contaminated water is to run in clean wat

er at a constant rate, stir, and let the mixture run out at the same rate. Suppose there are initially 100 pounds of a contaminant in a large tank of water. Assume that the cleaning method described above removes 20% of the remaining contaminant each hour. Round your answer to one decimal place. How much contaminant is removed from the tenth (t = 10) to the thirteenth (t = 13) hour of the cleaning process? lb
Mathematics
1 answer:
Naya [18.7K]3 years ago
5 0

Answer:

Idknibucu

Step-by-step explanation:

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The model represents an equation. What is the solution for the equation?
ryzh [129]

Answer: A x = 3

Step-by-step explanation:

7 0
3 years ago
Is 0:5 and 0:20 equivalent ratios
qwelly [4]

Answer:

Not for sure but i think so

Step-by-step explanation:


4 0
4 years ago
Read 2 more answers
Please show all work!! this is algebra.
Mnenie [13.5K]
Franco:
3x+2y=19
Caryl:
2x+4y=24

now use elimination

-2(3x+2y=19)
1(2x+4y=24)
=
-6x-4y=-38
2x+4y=24
add them together
which equals -4x=-14
divide both sides by -4
-4x/-4=-14/-4
x=7/2


we found x, so we subsitute it into the the original equation

3x+2y=19
3(7/2)2y=19
2y+21/2=19
-21/2 -21/2
2y=17/2
divide by 2 on both sides
2y/2= 17/2/2
y=17/4

so x= 7/2 and y= 17/4


8 0
2 years ago
Each​ month, your phone company charges you a fee of 20 cents per minute as well as a service fee of ​$6.95. Write a linear func
Whitepunk [10]

Answer:

Y = .2x + 6.95

Step-by-step explanation:

x = minutes, which is being multiplied every 20 cents.

Then the 6.95 is added to number of dollars

7 0
3 years ago
Read 2 more answers
Felipe, Pedro y Miguel son fanáticos del cine. Felipe asiste cada 3 días; Pedro cada 6 días y Miguel cada 5 días. Los tres van j
lilavasa [31]

Answer:

Opción C, 30 días.

Step-by-step explanation:

Sabemos que:

Felipe asiste al cine cada 3 días

Miguel asiste cada 5 días.

Pedro asiste cada 6 días.

Los tres van juntos un día,  ¿dentro de cuántos días irán otra vez juntos?

Los 3 volverán a ir juntos luego de N días, tal que N es el menor múltiplo común de 3, 5 y 6.

Como 6 es múltiplo de 3, podemos ignorar al 3, y solo considerar al menor múltiplo en común de 5 y 6.

Además, como podemos reescribir estos números como un producto de números primos, así obtenemos:

6 = 2*3

5 = 5*1

Estos números no comparten factores entre ellos, por lo que el menor múltiplo entre 5 y 6 es simplemente 5*6 = 30

Entonces podemos concluir que N = 30

Felipe, Pedro y Miguel irán juntos al cine nuevamente dentro de 30 días.

La opción correcta es C.

5 0
3 years ago
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