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faust18 [17]
3 years ago
14

Write an equation of a line in the form y=mx+b that together with the equation x+3y=9 forms a linear system that has no solution

s.
Mathematics
1 answer:
Alex73 [517]3 years ago
7 0

Answer:

I love algebra anyways

The ans is in the picture with the  steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

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A cup of coffee at 93 degrees Celsius is placed in a room at 23 degrees Celsius. Suppose that the coffee cools at a rate of 1 de
Alinara [238K]

Answer:

Step-by-step explanation:

The rate of change of temperature of the coffee with respect to time is expressed by the differential equation

dT/dt=k(T−A) when k = -1 and A = 23. The equation will become:

dT/dt = -(T-23)

If the coffee cools at the rate of 1°C per minute, then dT/dt = -1 and T = 70

Substituting into the equation:

-1 = k(70-23)

-1 = 47k

k = -1/47

k = -0.0213

Substituting k = -0.0213 into the original equation, the differential equation will be:

dT/dt=k(T−A)

dT/dt = -0.0213(T-23)

dT/dt = -0.0213T+0.489

To get the value of T, we will use variable separable method

dt = dT/-0.0213T+0.489

Integrate both sides

t = -0.0213ln(-0.0213T+0.489)

At t = 1 minute

1 = -0.0213ln(-0.0213T+0.489)

1/-0.0213 = ln(-0.0213T+0.489)

-46.95 = ln(-0.0213T+0.489)

Apply exp to both sides

e^-46.95 = e^ln(-0.0213T+0.489)

4.073×10^-21= -0.0213T+0.489

-0.0213T = 4.073×10^-21-0.489

-0.0213T = -0.489

T = 0.489/0.0213

T = 22.96°C

5 0
3 years ago
Will give brainlest if u slove
grin007 [14]

Answer:

:I

Step-by-step explanation:

6 0
2 years ago
Plz read the directions I really don’t understand it....<br> Plz follow what it wants
Ira Lisetskai [31]

Answer:

Cube

Step-by-step explanation:

It makes a cube

7 0
3 years ago
What are the two consecutive integers of 134?
Bingel [31]

Answer:

Are you asking just the next two integers are? If so, they're 135 and 136

6 0
3 years ago
Read 2 more answers
Simplify the following expression 4 + 3 . 7
Brilliant_brown [7]
Multiply the numbers
4 + 3 . 7
Then 4 + 21
= 25
4 0
2 years ago
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