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3 years ago

Find area of the triangle ABC with angle A = 71.273 degree, length b = 12.6 and length

Mathematics

1 answer:

mylen [45]3 years ago

6 0

Answer:

im not sure if this is right or not but you can try it if you want

Step-by-step explanation:

A. 75.8 square units B. 76.4 square units C. 76.8 square units D. 79.4 square units

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(b) dy/dx = (x - y+ 1)^2

Elanso [62]

Substitute $v(x)=x-y(x)+1$ , so that

$\dfrac{\mathrm dv}{\mathrm dx}=1-\dfrac{\mathrm dy}{\mathrm dx}$

Then the resulting ODE in $v(x)$ is separable, with

$1-\dfrac{\mathrm dv}{\mathrm dx}=v^2\implies\dfrac{\mathrm dv}{1-v^2}=\mathrm dx$

On the left, we can split into partial fractions:

$\dfrac12\left(\dfrac1{1-v}+\dfrac1{1+v}\right)\mathrm dv=\mathrm dx$

Integrating both sides gives

$\dfrac{\ln|1-v|+\ln|1+v|}2=x+C$

$\dfrac12\ln|1-v^2|=x+C$

$1-v^2=e^{2x+C}$

$v=\pm\sqrt{1-Ce^{2x}}$

Now solve for $y(x)$ :

$x-y+1=\pm\sqrt{1-Ce^{2x}}$

$\boxed{y=x+1\pm\sqrt{1-Ce^{2x}}}$

3 0

3 years ago

A teacher asked the class to write an expression that Which of these expressions have an estimated

valkas [14]

Answer:

9.7 x 2.84 and 6.25 x 4.76

Step-by-step explanation:

they are the only two that get close to 30 without getting over it

6 0

3 years ago

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HELP ME PLS PLS PLS PLS

Kipish [7]

Answer:

y=-6/4x-4

Step-by-step explanation:

8 0

2 years ago

<img src="https://tex.z-dn.net/?f=x-12%3D14" id="TexFormula1" title="x-12=14" alt="x-12=14" align="absmiddle" class="latex-formu

Wittaler [7]

If you’re tryouts bf to fin x it’s X=26

4 0

2 years ago

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I am confused please help

klemol [59]

Answer:

volume = lenght x width x height

v= 12x20x14

v=3,360 in³

3 0

2 years ago