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tino4ka555 [31]

3 years ago

13

7. In Ryan's city, it rained 2/5 of the days in September. More than 2 cm of rain fell 1/4 of those days. What fraction of the d

ays in September had rainfall of more than 2 cm?

1 answer:

ASHA 777 [7]3 years ago

5 0

Answer:

1/10 of the days in September had rainfall more than 2 cm

Step-by-step explanation:

Use the information given:

2/5 of the days in September had rain
1/4 of the days in September that had rain, had more then 2cm of rain
1/4 of 2/5 is 2/20=1/10

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leonid [27]

Answer with explanation:

The given differential equation is

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Let, y'=z

y"=z'

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Substituting the value of , y, y' and y" in equation (1)

z'-z+zx=2 sin 3 x

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This is a type of linear differential equation.

Integrating factor

$=e^{\int (x-1) dx}\\\\=e^{\frac{x^2}{2}-x}$

Multiplying both sides of equation (1) by integrating factor and integrating we get

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$I=\frac{-2\cos 3x e^{\fra{x^2}{2}-x}}{3}+\int\frac{2x\cos 3x e^{\fra{x^2}{2}-x}}{3} dx -\int \frac{2\cos 3x e^{\fra{x^2}{2}-x}}{3} dx\\\\I=\frac{-2\cos 3x e^{\fra{x^2}{2}-x}}{3}+\int\frac{2x\cos 3x e^{\fra{x^2}{2}-x}}{3} dx-\frac{2I}{3}\\\\\frac{5I}{3}=\frac{-2\cos 3x e^{\fra{x^2}{2}-x}}{3}+\int\frac{2x\cos 3x e^{\fra{x^2}{2}-x}}{3} dx\\\\I=\frac{-2\cos 3x e^{\fra{x^2}{2}-x}}{5}+\int\frac{2x\cos 3x e^{\fra{x^2}{2}-x}}{5} dx$

8 0

3 years ago

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Step-by-step explanation:

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Solving like terms

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3 years ago

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Dvinal [7]

Answer:

b

Step-by-step explanation:

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3 years ago

Mr. Smith water is one of his plans every 10 days and another plant every 14 days if you wanted both plans today when is the nex

aleksklad [387]

Answer:

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Step-by-step explanation:

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5 0

4 years ago

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marshall27 [118]

0 solutions

move the x to one side, and the numbers to the other.

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12x - 12x = -7 - 32

0 = -39

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∴ you have 0 solutions

hope this helps

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4 years ago

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