2 years ago

Answer helppppp plsss i’m on quizzzz

Mathematics

1 answer:

MrRa [10]2 years ago

4 0

I would love to help but i am in 5th grade

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Step-by-step explanation:

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16. A rock weighs 6 and 1/2 tons. How many pounds does the rock weigh?<br> 2,000 lb = 1 T

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Step-by-step explanation:

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What number would have to be added to complete this square x^2 + 10x +?

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3 years ago

Marks test scores for this semester were 83,80,91,74,66,95,87,72,95,97 what is the mode of his test scores

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Answer:

Step-by-step explanation:

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2 years ago

Problem1 The behavior of a physical system can be described by the following first order differential equation: dy/dt=2y +t^2

daser333 [38]

Answer:

$y = \dfrac{t^3e^{2t}}{3}+Ce^{2t}$ .

Step-by-step explanation:

Using first order linear differential equation:

$\dfrac{\mathrm{d} y}{\mathrm{d} t} = 2y + t^2$

$\frac{\mathrm{d} y}{\mathrm{d} t} - 2y =t^2$

finding integrating factor:

I.F = $e^{\int -2dt}$

I.F = $e^{-2t}$

now,

$y = \dfrac{1}{IF}(\int t^2dt+ c )$

$y = \dfrac{1}{e^{-2t}}(\int t^2dt+ c )$

$y = \dfrac{t^3e^{2t}}{3}+Ce^{2t}$

hence the solution is

$y = \dfrac{t^3e^{2t}}{3}+Ce^{2t}$

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3 years ago