3 years ago

A boy standing between two pillars of equal height observes the angle of a

Mathematics

1 answer:

pashok25 [27]3 years ago

5 0

Answer:

15m

Step-by-step explanation:

did the math

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harina [27]

Answer:

$y=3e^{-4t}$

Step-by-step explanation:

$y''+5y'+4y=0$

Applying the Laplace transform:

$\mathcal{L}[y'']+5\mathcal{L}[y']+4\mathcal{L}[y']=0$

With the formulas:

$\mathcal{L}[y'']=s^2\mathcal{L}[y]-y(0)s-y'(0)$

$\mathcal{L}[y']=s\mathcal{L}[y]-y(0)$

$\mathcal{L}[x]=L$

$s^2L-3s+5sL-3+4L=0$

Solving for $L$

$L(s^2+5s+4)=3s+3$

$L=\frac{3s+3}{s^2+5s+4}$

$L=\frac{3(s+1)}{(s+1)(s+4)}$

$L=\frac3{s+4}$

Apply the inverse Laplace transform with this formula:

$\mathcal{L}^{-1}[\frac1{s-a}]=e^{at}$

$y=3\mathcal{L}^{-1}[\frac1{s+4}]=3e^{-4t}$

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3 years ago

Jenny is picking up carrots at a farm. Jenny put each carrots in 4 boxes. Jenny figures out that there are 20 carrots in each bo

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Answer:

Step-by-step explanation:

you will do they 20 carrots times the 4 boxes which is 80 then add the 5 her dad gave her which gives you 85

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Which graph represents a reflection of f(x) = One-tenth(10)x across the y-axis? On a coordinate plane, an exponential function a

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Answer:

Step-by-step explanation:

The answer is D

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Solve for a 1/2 a-9=11

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Answer:

a=31

Step-by-step explanation:

1/2(a-9)=11

a-9=22

a=22+9

a=31

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Correct answer : 2) descending sort

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