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4 years ago

Answer this correctly

Mathematics

1 answer:

Elis [28]4 years ago

4 0

Answer:

1. 0.56=14/25

2. 0.45=9/20

3. 6.02=301/50

4. 1.4=7/5

5. 0.12= 3/25

Step-by-step explanation

REALLY EASY... IF U NEED MORE HELP LET ME KNO

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Diana is working on a painting for school. She needs 1 1/5 ounces of yellow paint and 2 1/2 ounces of orange paint. How much les

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Answer:

1 3/10

Step-by-step explanation:

We are to determine the difference the paint of yellow and orange paint

The equation we are to solve is

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The equation can be solved by taking the following steps

Subtract the two whole numbers
divide each denominator by the least common multiple of the denominator and multiply the figures by the numerator

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3 years ago

Prove that the two circle shown below are similar 9.01

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Answer:

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Step-by-step explanation:

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4 years ago

Write the equation of the line with a slope of -1/3 and passing through the point (6, -4).

Lina20 [59]

Y = -1/3x + b
then plug it in
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3 years ago

Find a particular solution to the differential equation y′′+2y′+y=2t2−t+3e−2t. y′′+2y′+y=2t2−t+3e−2t.

Jlenok [28]

$y''+2y'+y=2t^2-t+3e^{-2t}$

The characteristic equation is

$r^2+2r+1=(r+1)^2=0\implies r=-1$

so the characteristic solution is

$y_c=C_1e^{-t}+C_2te^{-t}$

For the particular solution, we can try looking for a solution of the form

$y_p=at^2+bt+c+de^{-2t}$
$\implies{y_p}'=2at+b-2de^{-2t}$
$\implies{y_p}''=2a+4de^{-2t}$

Substituting into the ODE, we have

$(2a+4de^{-2t})+2(2at+b-2de^{-2t})+(at^2+bt+c+de^{-2t})=2t^2-t+3e^{-2t}$
$at^2+(4a+b)t+(2a+2b+c)+de^{-2t}=2t^2-t+3e^{-2t}$
$\implies\begin{cases}a=2\\4a+b=-1\\2a+2b+c=0\\d=3\end{cases}\implies a=2,b=-9,c=14,d=3$

So the general solution to the ODE is

$y=y_c+y_p$
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3 years ago