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3 years ago

Need help asap and i will report any unnecessary comments

Mathematics

2 answers:

Flura [38]3 years ago

6 0

191 1/2 divide 1425 by 30 and you get 191 1/2

Inessa [10]3 years ago

5 0

Firstly, divide 30 by 1425

Then, 1425/30 = 47.5

A Mixed number = A whole number + fraction

Your final answer = 47 1/2 trains

Hope this helps <3 Good luck with future exams!

P.S Fun Fact~~ The Mona Lisa has no eyebrows!

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Help asap i will brainlist

aniked [119]

Answer:

8-3n

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<h2>Pwease Mark me Brainliest TY OwO</h2>

3 0

3 years ago

Factor completely x3 – 8

Travka [436]

Answer: (x-2) (x^2 + 2x + 4)

Step-by-step explanation:

x^3 - 8

x^3 - 2^3

(x-2) * (x^2+x * 2 + 2^2)

(x-2) (x^2 + 2x + 4)

3 0

4 years ago

Help me with this ;-;

uysha [10]

If you multiply all the square inches, you would get 15,015

4 0

3 years ago

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

What is the correct factorization of x^2 - 2x - 15?

iragen [17]

Answer:

option b

Step-by-step explanation:

${x}^{2} - 2x - 15$

${x}^{2} - 5x + 3x - 15 = 0$

$x(x - 5) + 3(x - 5) = 0$

$(x - 5)(x + 3) = 0$

x = -3 (Not possible)

x = 5

So, x = 5

8 0

3 years ago