3 years ago

HELP ME PLEASE......

Mathematics

1 answer:

kirza4 [7]3 years ago

3 0

Answer:

-2

Step-by-step explanation:

intercept at (0, -2)

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The LMC of 9 and 7

rodikova [14]

Answer:

Step-by-step explanation:

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3 years ago

given y>0 and dy/dx=(3x^2+4x)/yif the point (1,√10) is on the graph relating x and y, then what is y when x=0

jonny [76]

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{3x^2+4x}y\iff y\,\mathrm dy=(3x^2+4x)\,\mathrm dx$
$\implies\displaystyle\int y\,\mathrm dy=\int(3x^2+4x)\,\mathrm dx$
$\implies \dfrac12y^2=x^3+2x^2+C$

When $x=1$ you have $y=\sqrt{10}$ , so

$\dfrac12(\sqrt{10})^2=1^3+2(1)^2+C\implies 5=1+2+C\implies C=2$

and so the particular solution to the ODE is

$\dfrac12y^2=x^3+2x^2+2$

Then when $x=0$ , you get

$\dfrac12y^2=0^3+2(0)^2+2=2$
$\implies y^2=4$
$\implies y=2$

where we omitted the negative root because it's given that $y>0$ .

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3 years ago

Simplify the expression.<br><br><br> 5.3x - 9 + 7.6x

babunello [35]

Answer:

12.9x-9

Step-by-step explanation:

First you have to combine the like terms which are 5.3x + 7.6x= 12.9x. Then you just rewrite the equation 12.9x-9. You just leave the 9 by it self beacuse thers no other like terms.

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2 years ago

Read 2 more answers

Please help. I will give brainliest immediately.

DerKrebs [107]

Answer:

I'm pretty sure it is d, 5/22

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Answer:

c = 2 *pie* r

Step-by-step explanation:

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