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2 years ago

2x+2y+2x+2y+2x+2y+2x+2y+2x+2y+2x+2y eh...

Mathematics

2 answers:

marysya [2.9K]2 years ago

6 0

Answer:

6x + 6y just add all the 2x then 2y

jok3333 [9.3K]2 years ago

3 0

Answer:

12x+12y= 24

Step-by-step explanation:

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V = u + at<br> u = 2<br> a = -5<br> t = 1/2 (0.5)

Vsevolod [243]

$v = 2 + ( - 5 \times 0.5) \\ v = 2 - 0.5 \\ v = 1.5$

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3 years ago

The effect of global climate change on the US economy was investigated by researchers at Carnegie Mellon University. To gauge th

AURORKA [14]

Answer:

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Step-by-step explanation:

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3 years ago

how many 6 digit numbers can be found from digits 0,1,3,5,7,9 which are divisible by 10 and no digits is repeated

Tanzania [10]

It must end in a 0 for the number to be divisible by 10. The other 5 can go in any order, so 5 factorial (5!) = 5*4*3*2*1

120 numbers

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2 years ago

This is a question on my partial fractions homework, but no matter what I try I can't figure it out..

Ierofanga [76]

$\dfrac{x^2+x+1}{(x+1)^2(x+2)}=\dfrac{a_1x+a_0}{(x+1)^2}+\dfrac b{x+2}$
$\implies\dfrac{x^2+x+1}{(x+1)^2(x+2)}=\dfrac{(a_1x+a_0)(x+2)+b(x+1)^2}{(x+1)^2(x+2)}$
$\implies x^2+x+1=(a_1+b)x^2+(2a_1+a_0+2b)x+(2a_0+b)$
$\implies\begin{cases}a_1+b=1\\2a_1+a_0+2b=1\\2a_0+b=1\end{cases}\implies a_1=-2,a_0=-1,b=3$

So you have

$\displaystyle\int_0^2\frac{x^2+x+1}{(x+1)^2(x+2)}\,\mathrm dx=-2\int_0^2\frac x{(x+1)^2}\,\mathrm dx-\int_0^2\frac{\mathrm dx}{(x+1)^2}+3\int_0^2\frac{\mathrm dx}{x+2}$
$=\displaystyle-2\int_1^3\dfrac{x-1}{x^2}\,\mathrm dx-\int_0^2\frac{\mathrm dx}{(x+1)^2}+3\int_0^2\frac{\mathrm dx}{x+2}$

where in the first integral we substitute $x\mapsto x+1$ .

$=\displaystyle-2\int_1^3\left(\frac1x-\frac1{x^2}\right)\,\mathrm dx-\frac1{1+x}\bigg|_{x=0}^{x=2}+3\ln|x+2|\bigg|_{x=0}^{x=2}$
$=-2\left(\ln|x|+\dfrac1x\right)\bigg|_{x=1}^{x=3}-\dfrac23+3(\ln4-\ln2)$
$=-2\left(\ln3+\dfrac13-1\right)-\dfrac23+3\ln2$
$=\dfrac23+\ln\dfrac89$

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3 years ago

In an isosceles triangle, angles B and C are called _______ angles

Iteru [2.4K]

Base angles.
They are congruent

6 0

3 years ago

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