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miskamm [114]
3 years ago
8

Which equation has solution x = -3?

Mathematics
1 answer:
vovangra [49]3 years ago
8 0
<span>If the answer is incorrect , please delete.

Answer is B and D

have a nice days.........</span>

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202·87–100·87–2·87=
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Step-by-step explanation:

202·87–100·87–2·87

=99.13

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Newton’s law of cooling states that dx/dt= −k(x − A) where x is the temperature, t is time, A is the ambient temperature, and k
Vadim26 [7]

Answer:

(a) The solution to the differential equation is x = A_0Coswt + Ce^(-kx)

(b) The initial condition t > 0 will not make much of a difference.

Step-by-step explanation:

Given the differential equation

dx/dt= −k(x − A); t > 0, A = A_0Coswt

(a) To solve the differential equation, first separate the variables.

dx/(x - A) = -kdt

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ln(x - A) = -kt + c

x - A = Ce^(-kt) (Where C = ce^(-kt))

x = A + Ce^(-kx)

Now, we put A = A_0Coswt

x = A_0Coswt + Ce^(-kx) (Where C is constant.)

And we have the solution.

(b) Since temperature t ≠ 0, the initial condition t > 0 will not make much of a difference because, Cos(wt) = Cos(-wt).

It is not any different from when t < 0.

7 0
3 years ago
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1 inch = 2.5 cm.<br><br> How many inches are there in 17.4?
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A quality control worker checked that 3 out of 40 TVs are defective(do not work).
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Answer:

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Divide 8000 by 40 then multiply by 3

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