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3 years ago

14

Which choice shows the image of figure 1 being transformed with a translation of 8 units left followed by a rotation of 180° aro

und the origin?

1 answer:

gizmo_the_mogwai [7]3 years ago

3 0

Answer:

Step-by-step explanation:

the left picture

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

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I need to know how to do 5 & 6 if someone could please help me

ehidna [41]

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Which is an expression to find the speed in m/s? d = 40 meters, t = 10 seconds

Jobisdone [24]

The answer is A because the equation is 40/10 which would give you 4 and it asks m/s.

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121/100 is the answer. it cant be simplified anymore

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2 years ago

Whats the value of x

Gnesinka [82]

Answer:

i think 64?

Step-by-step explanation:

its supposed to be the same on the bottom, right?

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