All categories

3 years ago

Please Help me :) . . . . .

Mathematics

2 answers:

Softa [21]3 years ago

4 0

The correct answer is x = 20

Irina-Kira [14]3 years ago

3 0

The answer is 20 because the line u see x is 160 so the one kitty corner is also 160 and a straight line is 180 degrees so 180-160=20 so the answer is 20 degrees

You might be interested in

I need help with this homogeneous equation

slamgirl [31]

Answer:

$ln [1 - (\frac{y}{x} )^{2} ] + ln x + c = 0$ . This is the solution.

Step-by-step explanation:

The homogeneous differential equation is given by

$\frac{dy}{dx} = \frac{x^{2} + y^{2} }{2xy}$

⇒ $\frac{dy}{dx} = \frac{1 + (\frac{y}{x} )^{2} }{2(\frac{y}{x} )}$ ........ (1)

Now to solve this differential equation we assume that y = vx where v is another variable.

So, differentiating with respect to x we get $\frac{dy}{dx} = v + x \frac{dv}{dx}$

Therefore, the above equation (1) becomes

$v + x \frac{dv}{dx} = \frac{1 + v^{2} }{2v}$ {Since $v = \frac{y}{x}$ }

⇒ $x\frac{dv}{dx} = \frac{1 + v^{2} - 2v^{2} }{2v}$

⇒ $x\frac{dv}{dx} = \frac{1 - v^{2}}{2v}$

⇒ $\frac{2v}{1 - v^{2} } dv = \frac{dx}{x}$ {By separation of variables}

Now, integrating both sides we get,

$\int {\frac{2v}{ 1- v^{2}}} \, dv = \int {\frac{dx}{x} } \, dx$

⇒ $- \int {\frac{d(1 - v^{2} )}{1 - v^{2}}} = \int {\frac{dx}{x} }$

⇒ $- ln (1 - v^{2}) = ln x + c$ {Where c is the integration constant}

⇒ $ln [1 - (\frac{y}{x} )^{2} ] + ln x + c = 0$ (Answer)

6 0

3 years ago

Distribute (x-4)(x+2) a) x^2+6x-8 b) x^2-2x-8 c) x62-6x-8 d) x^2+2x-8

user100 [1]

The answer: B. x^2-2x-8

6 0

3 years ago

What is that value of y in the equation 6.4x + 2.8y =44.4,when x=3

sasho [114]

The value of y, when x = 3, would be 9.

HERE'S HOW I GOT THAT ANSWER: When you multiply 6.4 and 3, your would get 19.2. So you would subtract 44.4 and 19.2, and then you would get 25.2. Once you would get that, you would divide 25.2 by 2.8 so you could isolate the y, and once you did that, you would get 9.

6 0

3 years ago

Read 2 more answers

5 + (-2)= A. -3 B. 3 C. -2 D. -5 E. 0

JulsSmile [24]

Answer:

it is b because I did the math and got that

5 0

3 years ago

Read 2 more answers

Why is a symbol used to separate the ones place from the tenth place in decimal numbers

Marysya12 [62]

A decimal
-------------------------------------------------
for example:
5.0
The 5 is on the ones place,the 0 is on the tenths place.The decimal seperates the ones and the tenths place.
------------------------------------------------------------------------------------------------------
~Hope this helped

7 0

3 years ago