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statuscvo [17]
3 years ago
7

Simplify the complex rational expression

Mathematics
2 answers:
12345 [234]3 years ago
8 0

Answer:

2( x +2 )

<em>x+1</em>

Step-by-step explanation:

to add or subtract expressions expand them to make their denominators the same, multiply 1 time \frac{x-2}{x-2}

since \frac{x}{x-2} and \frac{x-2}{x-2} have the same denominators add them by adding their numerators

combine x + x -2

factor x^{2} - 4

to add or subtract expressions expand them and multiply by 1

have same denominator add them by adding their numerators

do the multiplications in 3 + ( x-2 )(x+2)

combine like terms in 3 + x^{2} + 2x - 2x -4

divide \frac{2x-2}{x-2} by \frac{-1 + x^{2} }{(x-2)(x+2) } multiplying \frac{2x-2}{x-2}

cancel out x-2 in both numerator and denominator

factor the expression that are not already factored

cancel out x-1  in both numerator and denominator

expand the expression

jasenka [17]3 years ago
7 0

Answer:

2(x+2)/x+1

Step-by-step explanation:

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50 POINTS!! Pleasee helppppp!!! A scientific journal recently reported that there are currently 2400 black rhinos in the world t
Harman [31]

Answer:

C

Step-by-step explanation:

So, we started out with 2,400 black rhinos.

And we know that they are declining at a rate of 10% per year.

In other words, each subsequent year will only have <em>90%</em> of the previous year's rhinos.

Therefore, our function is:

f(x)=2400(.9)^x

We can do some elimination first.

First, the starting point or y-intercept <em>must </em>be 2400 since that's the number of rhinos we started out with.

Therefore, we can eliminate A and D.

From the remaining choices B or C, we can technically also eliminate B. This is because from our function, we know it's exponential decay, and exponential decay is <em>not</em> a straight line.

However, to double check, let's check the population after 10 years using our function. So:

f(10)=2400(.9)^{10}

Use a calculator:

f(10)\approx837

So, after 10 years, the population should be around 840.

B is definitely <em>not</em> 840 (at x=10). However, C is right around it.

Therefore, we can conclude that C is the right answer.

And we're done!

6 0
3 years ago
Someone please hurry and answer i will mark brainelist!!!!! or how ever you spell it
tigry1 [53]

What is the question?

3 0
3 years ago
Math linear functions
Ivenika [448]

Answer:

60x-80

Step-by-step explanation:

per hour is x and the fee is negative 80

5 0
3 years ago
What is the volume, in cubic in, of a rectangular prism with a height of 8in, a width of 5in, and a length of 9in?
Maslowich

Answer:

360 in ^3

Step-by-step explanation:

The volume is given by

V = l*w*h

 = 8 * 5 * 9

  = 360 in ^3

3 0
3 years ago
Write the new function if the parent function f(x)=-2x-5 is translated 2 units left.
Natali [406]

Answer:

f(x)= -2x-3, im so sorry if this is wrong

Step-by-step explanation:

to translate it left you have to add 2

3 0
3 years ago
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