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2 years ago

Could someone please help me out with this

Mathematics

1 answer:

Mkey [24]2 years ago

5 0

Answer:

# 2,9 are declareitive .......... .......

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Please help. tap the photo to see the whole problem. thanks.

Bond [772]

He didn’t multiply the equation by 1/2 in the second part so it threw his whole answer off. Hope this helps

3 0

3 years ago

Put the differential equation 9ty+ety′=yt2+81 into the form y′+p(t)y=g(t) and find p(t) and g(t). p(t)= help (formulas) g(t)= he

alexgriva [62]

Answer:

$p(t) = \frac{9t^{3} + 729t - 1}{e^{t}(t^{2} + 81) }$

g(t) = 0

And

The differential equation $9ty + e^{t}y' = \frac{y}{t^{2} + 81 }$ is linear and homogeneous

Step-by-step explanation:

Given that,

The differential equation is -

$9ty + e^{t}y' = \frac{y}{t^{2} + 81 }$

$e^{t}y' + (9t - \frac{1}{t^{2} + 81 } )y = 0\\e^{t}y' + (\frac{9t(t^{2} + 81 ) - 1}{t^{2} + 81 } )y = 0\\e^{t}y' + (\frac{9t^{3} + 729t - 1}{t^{2} + 81 } )y = 0\\y' + [\frac{9t^{3} + 729t - 1}{e^{t}(t^{2} + 81) } ]y = 0$

By comparing with y′+p(t)y=g(t), we get

$p(t) = \frac{9t^{3} + 729t - 1}{e^{t}(t^{2} + 81) }$

g(t) = 0

And

The differential equation $9ty + e^{t}y' = \frac{y}{t^{2} + 81 }$ is linear and homogeneous.

6 0

3 years ago

Linda used 36 m of fencing to enclose a rectangular section of her back yard .

Montano1993 [528]

Answer:

so you'll take width (or w) and times it by Height (or h)

50 x 100 = 5000 = example

I hope this helps...

Step-by-step explanation:

3 0

3 years ago

Which expression is equivalent to the expression 3^7x3^-4

kykrilka [37]

Answer:

3^7 * 3^(-4) = 3^(7 - 4) = 3^3 = 27

5 0

3 years ago

I need to know how to solve this

Greeley [361]

Vertical angles are congruent, so
107=3x-4
3x=111
x=111/3=37°

8 0

3 years ago

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