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4 years ago

Help ASAP I will Mark brainless for the first person to answer both questions

Mathematics

1 answer:

Paladinen [302]4 years ago

4 0

Answer:

2. K=17/45

4.K=29/22

Step-by-step explanation:

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A jewelry box is in the shape of a rectangular with a volume of 528 cubic inches l. The length of the box is 12 inches and the h

Artist 52 [7]

Volume=length*height*width
528=12*5.5*w

divide both sides by 12
44=5.5w
divide both sides by 5.5
8=w
width is 8 inches

5 0

3 years ago

Find Integrating Fector: <br> ylogy dx + ( x-logy )dy=0

12345 [234]

Rewrite the ODE as

$y\log y\,\mathrm dx+(x-\log y)\,\mathrm dy=0\iff y\log y\dfrac{\mathrm dx}{\mathrm dy}+x=\log y$
$\dfrac{\mathrm dx}{\mathrm dy}=\dfrac1{y\log y}x=\dfrac1y$

so that it is now linear in $x$ . An integrating factor would

$\mu(y)=\exp\left(\displaystyle\int\frac{\mathrm dy}{y\log y}\right)=e^{\log(\log y)}=\log y$

Multiply both sides by $\mu(y)$ to get

$\log y\dfrac{\mathrm dx}{\mathrm dy}=\dfrac1yx=\dfrac{\log y}y$
$\dfrac{\mathrm d}{\mathrm dy}[x\log y]=\dfrac{\log y}y$
$x\log y=\displaystyle\int\frac{\log y}y\,\mathrm dy$
$x\log y=\dfrac12\log^2y+C$
$x=\dfrac12\log y+\dfrac C{\log y}$

4 0

4 years ago

Solve the following system of equations for x:

nikitadnepr [17]

Answer:

x=0.5

Step-by-step explanation:

2x+y= -2

and

4x+y= -8 so...

2x+y= -2 = 4x+y= -8

2x+4x= 6x

y+y=2y

-2+-8= -10

6x+2y= -10

2y- -10= 12

6x=12

6/12=0.5

x=0.5

3 0

3 years ago

Solve the system of linear equations by elimination 2x+7y=1 2x-4y=12

pishuonlain [190]

$\left\{\begin{array}{ccc}2x+7y=1\\2x-4y=12&\text{change the signs}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}2x+7y=1\\-2x+4y=-12\end{array}\right}\qquad\text{add both sides of equations}\\.\qquad\qquad11y=-11\qquad\text{divide both sides by 11}\\.\qquad\qquad \boxed{y=-1}\\\\\text{Put the value of y to the first equation:}\\\\2x+7(-1)=1\\2x-7=1\qquad\text{add 7 to both sides}\\2x=8\qquad\text{divide both sides by 2}\\\boxed{x=4}\\\\Answer:\ \boxed{x=4\ and\ y=-1\to(4,\ -1)}$

3 0

4 years ago

Sam ate 1/4 of a pizza. Claire ate 2/8. Did they eat same amount of pizza?

-BARSIC- [3]

Answer:

yes

Step-by-step explanation: Because by simplifying down 2/8 you get 1/4 to do that you just divide the numerator and the denominator by 2 therefore they ate the same amount

8 0

4 years ago

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Help ASAP I will Mark brainless for the first person to answer both questions​

Help ASAP I will Mark brainless for the first person to answer both questions