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Vesna [10]
3 years ago
11

What is the sum of the rational expressions below? 2x-1/7x + x/x-2

Mathematics
2 answers:
Anuta_ua [19.1K]3 years ago
6 0
X-4/2x=3x/2x-1 (invert the bottom and then multiply) 
<span>x-4 (2x+3x/2x-1) ( the 2x's cancel) </span>
<span>x-4 (3x/-1) </span>
<span>x-4 (-3x) (expand) </span>
<span>-3x^2 + 12x=0 </span>
<span>-3x^2= -12x (bring 12x to other side making it negative) </span>
<span>-3x^2/3x= -12x/-3x (divide both sides by -3x) </span>
<span>x=4 </span>
<span>Hope that helps</span>
Angelina_Jolie [31]3 years ago
5 0
\frac{2x-1}{x} + \frac{x}{x -2} = \frac{(2x-1)(x-2) +(x)(7x)}{(7x)(x-2)}

You know the first term of the numerator wil be 2x^2 +7x^2 = 9x^2, and the last term of the denominator will be 7x(-2) = -14x.

This is sufficient work to identify selection B as the correct choice.
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inna [77]
Add 5/9 to both sides. common denominator would be 72 so you would multiply the top and bottom of 3/8 by 9 (bc 9x8 is 72) to get 27/72. you would multiply top and bottom of 5/9 by 8 to get 40/72 and you would add 40+27 which equals 67 so x=67/72 i believe
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3 years ago
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Need An Answer ASAP ... THANK YOU !!!
lozanna [386]

Answer:

∠EFG = 48°

Step-by-step explanation:

As FH bisects ∠EFG , ∠EFH = ∠HFG .

We know that ∠EFH = (-5x + 89)° . So ∠HFG = ∠EFH = (-5x + 89)°

Also, ∠HFG  + ∠EFH = ∠EFG

=> 2(-5x + 89)° = (61 - x)°

=> -10x + 178 = 61 - x

=> 10x - x = 178 - 61

=> 9x = 117

=> x = 117 / 9 = 13

Putting the value of 'x' in ∠EFG gives :-

(61 - x)° = (61 - 13)° = 48°

8 0
3 years ago
Help asap will mark brainliest
Harrizon [31]

Answer:

Step-by-step explanation:

7-5

-21-0

-2/21. the y intercept would be 5, considering the x is 0 on the first pair of coordinates. so y=-2/21x+5, or A

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Pleas someone help me with this it's my last question
ruslelena [56]

Answer:

we need to find out if the following get x = 2 as a final product

-2(x-4) = 4

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