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3 years ago

What equation is the inverse of

Mathematics

1 answer:

ivolga24 [154]3 years ago

4 0

Last option. but idk

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The diameter of the circle above is 86 cm. What is the circumference of the circle? (Use = 3.14.)

Harman [31]

2(3.14)r = Circumference

r = d/2

r = 43

2 x 3.14 x 43 = 270.04 cm

5 0

2 years ago

Four less than the product of a number and 7 is eight more than that number

AveGali [126]

Answer:

i did a wild guess and i got the answer is 2

Step-by-step explanation:

2*7=14

14-4=10

10-2=8

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2 years ago

X÷-1.2= -0.3 i need help with this asap pls and thank you

Aleks [24]

0.3×1.2

=0.36

−0.3,1.2→Negative

−0.36

3 0

1 year ago

What is 67/100 as a decimal

ASHA 777 [7]

<span>67/100 as a decimal.

Divide numerator by denominator. Answer = decimal form.

67/100
67/100 = 0.67

67/100 as a decimal = 0.67
</span>

4 0

2 years ago

Read 2 more answers

Find a particular solution to y" - y + y = 2 sin(3x)

leonid [27]

Answer with explanation:

The given differential equation is

y" -y'+y=2 sin 3x------(1)

Let, y'=z

y"=z'

$\frac{dy}{dx}=z\\\\d y=zdx\\\\y=z x$

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

z'-z+zx=2 sin 3 x

z'+z(x-1)=2 sin 3 x-----------(1)

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

$\rightarrow z\times e^{\frac{x^2}{2}-x}=\int 2 sin 3 x \times e^{\frac{x^2}{2}-x} dx=I$

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

8 0

2 years ago