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yawa3891 [41]
2 years ago
13

7 is what percent of 154?

Mathematics
1 answer:
Nataly_w [17]2 years ago
4 0

Answer: 10.78

Step-by-step explanation:

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A) Use the definition of Laplace transform to find L{f }. (Do the integrals.) For what values of s is L{f } defined?f(t) = (2t+1
kiruha [24]

For the given function f(t) = (2t + 1) using definition of Laplace transform the required solution is L(f(t))s = [ ( 2/s²) + ( 1/s) ].

As given in the question,

Given function is equal to :

f(t) = 2t + 1

Simplify the given function using definition of Laplace transform we have,

L(f(t))s = \int\limits^\infty_0 {f(t)e^{-st} } \, dt

          =  \int\limits^\infty_0[2t +1] e^{-st} dt

          = 2\int\limits^\infty_0 te^{-st} + \int\limits^\infty_0e^{-st} dt

         = 2 L(t) + L(1)

L(1) = \int\limits^\infty_0e^{-st} dt

     = (-1/s) ( 0 -1 )

     = 1/s , ( s >  0)

2L ( t ) = 2\int\limits^\infty_0 te^{-st}

        =  2[t\int\limits^\infty_0 e^{-st} - \int\limits^\infty_0 ({(d/dt)(t) \int\limits^\infty_0e^{-st} \, dt )dt]

        =  2/ s²

Now ,

L(f(t))s = 2 L(t) + L(1)

          = 2/ s² + 1/s

Therefore, the solution of the given function using Laplace transform the required solution is L(f(t))s = [ ( 2/s²) + ( 1/s) ].

Learn more about Laplace transform here

brainly.com/question/14487937

#SPJ4

8 0
1 year ago
The ratio of boys to girls in Mr. Smith's class is 3:2.
ankoles [38]

Answer: A and E

Step-by-step explanation: since the question says boys to girls and not girls to boys we assume the first number in the ratio is boys. This makes A correct 3 boys for every 2 girls. And 3+2 is 5 so for every 5 students there are 2 girls because you add the 3 boys

7 0
3 years ago
At the same time a 12 foot adult elephant cast a 4.8 foot shadow a baby elephant casts a 2 foot shadow how tall is the baby elep
Vsevolod [243]
Set up a proportion here as the height over the shadow of the adult = to the height over the shadow of the baby. so you have 12/4.8 = height/2. cross multiply to get 12*2=4.8 times height, which is 24 = 4.8*height. divide both sides by 4.8 to get height = 5 feet
4 0
3 years ago
Data Set: 13, 1, 18, 20, 18<br> • Mean =<br> Median =<br> • Mode =<br> • Range -<br> • Outlier -
KengaRu [80]

Answer:

mean=14

median=3

mode=20

range=19

8 0
3 years ago
Read 2 more answers
Simplify. 14.2 • (–6) ÷ 15 • (–4) ÷ 0.4 A. –56.8 B. –3.55 C. 56.8 D. 3.55
snow_tiger [21]
The answer is C. 56.8
3 0
3 years ago
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