3 years ago

Please help! 3(x - 5) = 6 x =

Mathematics

1 answer:

Orlov [11]3 years ago

3 0

The answer is 7 distributed and you get 3x-15=6 add 15 to both sides you get 3x=21 and x equals 7

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Find the inverse Laplace transform f(t) of the function F(s). Write uc for the Heaviside function that turns on at c, not uc(t).

zzz [600]

Answer:

F(t) $=\frac{-1}{2}e^{7(t-7)}+\frac{1}{2}e^{-7(t-7)}$

Step-by-step explanation:

We have given $F(S)=\frac{7e^{-7s}}{s^2-49}$

Now $F(S)=e^{-7s}G(s)$

Here $G(S)=\frac{7}{S^2-49}$

Now first find the Laplace inverse of G(S)

Using partial fraction

$\frac{7}{(s+7)(s-7)}=\frac{A}{(S+7)}+\frac{B}{S-7}$

$7=A(S-7)+B(S+7)$

On comparing the coefficient

$A=\frac{1}{2}$ and $B=\frac{-1}{2}$

On putting the value of A and B

$G(S)=\frac{-1}{2(S+7)}+\frac{1}{2(S+7)}$

Taking inverse Laplace

$G(t)=\frac{-1}{2}e^{7t}+\frac{1}{2}e^{-7t}$

Now in G(s) there is onether term $e^{-7s}$

So F(t) $=\frac{-1}{2}e^{7(t-7)}+\frac{1}{2}e^{-7(t-7)}$

6 0

3 years ago

I don’t quite understand this problem could someone help me please

ale4655 [162]

Answer:

$\frac{7\sqrt{65}}{65}$

Step-by-step explanation:

Cosine is the ratio of the side adjacent to the angle and the right triangle hypotenuse.

$cos$ B = $\frac{7}{\sqrt{65}}$ = $\frac{7\sqrt{65}}{65}$

3 0

2 years ago

Can someone help me with this please

Yuri [45]

Answer:

ofc ill help! x=-35

Step-by-step explanation:

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3 years ago

Divide.help me I'm stuck!<br> 23÷45

anyanavicka [17]

Answer:

0.511111111111111

Step-by-step explanation:

23/45 In a calculator comes out to that.

6 0

3 years ago

Read 2 more answers

The odds that you will pick a heart from a standard deck of 52 cards is 13:39.

podryga [215]

Not exactly sure but I think it's false hope this helps

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3 years ago