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2 years ago

7(5/14a-5/21)-1/12(3a+6)

Mathematics

2 answers:

lesya692 [45]2 years ago

4 0

Answer:

use wolfram alfa

Step-by-step explanation:

It’s a life saver

n200080 [17]2 years ago

3 0

Answer:

I can help!! answer in image

Step-by-step explanation:

Have a great day sir

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How to solve: dy/dx=e^(x-y), y(0)=ln3

ella [17]

Hello,

$\dfrac{dy}{dx} = \dfrac{e^x}{e^y} \\

e^y*dy=e^x*dx \\

e^y=e^x+C\\

if\ x=0\ then\ y=ln(3) ==\ \textgreater \ 3=1+C==\ \textgreater \ C=2\\

\boxed{y=ln(2+e^x)}\\

$

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3 years ago

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The sum of the radius of the base and the height of a solid cylinder is 37m. If the total surface area of the cylinder is 1628 m

MA_775_DIABLO [31]

Answer:

4618.14 $m^{3}$ or 4618 $m^{3}$

Step-by-step explanation:

From T.S.A = 2 $\pi$ rh + 2 $\pi$ $r^{2}$

where T.S.A = 1628 $m^{2}$

1628 = 2 $\pi$ rh + 2 $\pi$ $r^{2}$

1628 = ( rh + $r^{2}$ ) 2 $\pi$

by dividing both side by 2 $\pi$

$\frac{1628}{2\pi }$ = rh + $r^{2}$

259.10 = rh + $r^{2}$

rh = 259.10 - $r^{2}$

h = $\frac{259.10 - r^{2} }{r}$ <u> </u>(1)

From Radius + Height = 37

r + h = 37 <u> </u>(2)

by substituting eqn 1 into 2

r + $\frac{259.10 - r^{2} }{r}$ = 37

by multiplying r to both side

$r^{2}$ + 259.10 - $r^{2}$ = 37r

259.10 = 37r

r = $\frac{259.10}{37}$

r = 7.00 ≅ 7

From Eqn 2

r + h = 37

7 + h = 37

h = 37 - 7

h = 30

so Volume of a cylinder = $\pi r^{2} h$

V = $\pi$ * $7^{2}$ * 30

V = 4618.14 $m^{3}$ ≅ 4618 $m^{3}$

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3 years ago

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What statement describes the expression 10 +1/4× (5+3)-3

sasho [114]

Answer:

The answer would be 9.

Step-by-step explanation:

10 + 1/4 x (5 + 3) - 3

10 + 1/4 x (8) - 3

10 + 2 - 3

12 - 3

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3 years ago

Can I have some help please

Sedaia [141]

90 degrees because it is a parallelogram

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3 years ago

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Davin has 39 toys blocks. What’s is the value of the digit 9 in this number?

Katena32 [7]

The digit 9 in 39 is the ones place.

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3 years ago