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3 years ago

Find the measure of angle A for both 47 and 48

Mathematics

1 answer:

julsineya [31]3 years ago

4 0

Step-by-step explanation:

47)25+35x+4x-1=180

24+39x=180

39x=180-24

39x=156

x=4

48)70+9x-5+13x+5=180

70+22x=180

22x=180-70

22x=110

x=5

Hope this helps u...

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Dennis_Churaev [7]

Answer:

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Step-by-step explanation:

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m=33/9

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4 years ago

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2 years ago

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Elena-2011 [213]

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Step-by-step explanation:

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3 years ago

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In problem solve the given differential equation by underdetermined coefficients y''-2y+y=xe^x

Alexus [3.1K]

Answer:

Solution is $y(t)=C_1e^x+C_2xe^x+\frac{x^3e^x}{6}$

Step-by-step explanation:

Given Differential Equation,

$y"-2y'+y=xe^x$ ...............(1)

We need to solve the given differential equations using undetermined coefficients.

Let the solution of the given differential equation is made up of two parts. one complimentary solution and one is particular solution.

$\implies\:y(x)=y_c(x)+y_p(x)$

For Complimentary solution,

Auxiliary equation is as follows

m² - 2m + 1 = 0

( m - 1 )² = 0

m = 1 , 1

So,

$y_c(x)=C_1e^x+c_2xe^x$

Now for particular solution,

let $y_p(x)=Ax^3e^x$

$y'=Ax^3e^x+3Ax^2e^x$

$y"=Ax^3e^x+6Ax^2e^x+6Axe^x$

Now putting these values in (1), we get

$Ax^3e^x+6Ae^2e^x+6Axe^x-2(Ax^3e^x+3Ax^2e^x)+Ax^3e^x=xe^x$

$Ax^3e^x+6Ae^2e^x+6Axe^x-2Ax^3e^x-6Ax^2e^x+Ax^3e^x=xe^x$

$6Axe^x=xe^x$

$6A=1$

$A=\frac{1}{6}$

$\implies\:y_p(x)=\frac{x^3e^x}{6}$

Therefore, Solution is $y(t)=C_1e^x+C_2xe^x+\frac{x^3e^x}{6}$

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4 years ago

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inysia [295]

Answer:

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Evaluate the function at x = 2.

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3 years ago