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2 years ago

15

A computer system password requires five characters, all lowercase letters (remember there are 26 letters), and all the letters

must be different. how many different passwords are possible?

1 answer:

Goshia [24]2 years ago

3 0

26 divided by 5 = 5.2

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4> Solve by using Laplace transform: y'+5y'+4y=0; y(0)=3 y'(o)=o

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:

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

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

7 0

2 years ago

3. Multiply<br> (5 points)<br> O<br> 33<br> -6<br> 40<br> O<br> mo<br> O

ladessa [460]

Answer: -7920

Step-by-step explanation: 33x-6x40= -7920

5 0

3 years ago

Read 2 more answers

Which cost less a 1,000 dollar computer discounted onto 20% then 10% or a 1,000 dollar computer discounted to 30% if that makes

kykrilka [37]

First one costs $720, second costs $700 so the second one the<span> 1,000 dollar computer discounted to 30%</span>

6 0

2 years ago

Sales tax is calculated as a percentage of the sales price. If sales tax is 6%, what is the sales tax on clothing that costs $18

Gekata [30.6K]

180 x 0.06 = 10.80; $10.80.

Hope this helps,
♥Nikki♥

6 0

2 years ago

Read 2 more answers

Plz help me. Jose travels 34 miles from home to work on a daily basis. If she takes up a job that is 1 and 1/2 times as far as h

algol13

Answer:

I think it is either 85 or 51 because the question was not specific

Step-by-step explanation:

I am not entirely sure if you mean Jose changed jobs or added a new job on top but i will do both.

34/2=17

17+34=51

OR

51+34=85

5 0

2 years ago

Read 2 more answers