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Paha777 [63]
3 years ago
7

Perform the indicated operation and simplify the result. Leave your answer in factored form.

Mathematics
2 answers:
vladimir1956 [14]3 years ago
8 0

Answer:

\frac{x}{y} \frac{5x}{\frac{x^{2} -4}{\frac{8x}{x+2} } }\\\\=\frac{5x(x+2)}{8x(x^{2} -4)}\\\\=\frac{5(x+2)}{8(x+2)(x-2)}\\\\=\frac{5}{8(x-2)}\\\\=\frac{5}{8}.\frac{1}{x-2}

Step-by-step explanation:

olga2289 [7]3 years ago
3 0

Step-by-step explanation:

\frac{ \frac{5x}{ {x}^{2} - 4 } }{ \frac{8x}{x + 2} }  =  \frac{5x}{ {x}^{2} - 4 }  \times  \frac{x + 2}{8x}  =  \frac{5x + 10}{ {8x}^{2}  - 32}   \\

hope it helps:)

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6 0
3 years ago
Some number was divided into 104.13. This quotient was multiplied by 4, after which the resulting product was added to 5. Given
SVEN [57.7K]

Answer:

The initial number is <u>-1218.321</u>.

Step-by-step explanation:

Let the initial number be 'x'.

The number 'x' is divided into 104.13.

So, we divide the number 'x' by 104.13. This gives,

\dfrac{x}{104.13}

Now, the quotient is multiplied by 4. So, this means we need to multiply 4 to the fraction above. This gives,

\dfrac{x}{104.13}\times 4\\\\\frac{4x}{104.13}

Now, 5 is added to the result. This gives,

\frac{4x}{104.13}+5

Now, as per question:

\frac{4x}{104.13}+5=-41.8

Now, solving for 'x', we add -5 both sides. This gives,

\frac{4x}{104.13}+5-5=-41.8-5\\\\\frac{4x}{104.13}=-46.8\\\\4x=-46.8\times 104.13\\\\4x=-4873.284\\\\x=\frac{-4873.284}{4}=-1218.321

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6 0
3 years ago
What is 60 + 50.45x = 57.95x and how do I know which part of the equation to solve at which time?
Aleksandr-060686 [28]

Answer:

x=8

Step-by-step explanation:

First, subtract 50.45x from both sides. Then divide by 7.5 on both sides.

60+50.45x=57.95x\\60=7.5x\\x=8

8 0
3 years ago
Find the value of z such that 0.96420.9642 of the area lies between −z−z and z. round your answer to two decimal places.
Brut [27]
If z represents the variable of the standard normal distribution curve N(0,1), which is symmetrical about z=0, then we look for
P(z)-P(-z)=0.9642=1-2P(-z) => P(-z)=(1-0.9642)/2=0.0179
=>
-z=-2.099192
=> z=2.099192
Check:
P(2.099192)-P(-2.099192)=0.9642  ok
7 0
4 years ago
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