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Gre4nikov [31]
2 years ago
9

Can someone explain how we solve this problem

Mathematics
2 answers:
Virty [35]2 years ago
5 0
X + 5 - 1/x = x - 7 + 1/x
Bring x + 5 - 1/x together using the common denominator x. Bring x - 7 + 1/x together using the common denominator x:
(x^2 + 5 x - 1)/x = (x^2 - 7 x + 1)/x
Multiply both sides by x:
x^2 + 5 x - 1 = x^2 - 7 x + 1
Subtract x^2 - 7 x + 1 from both sides:
12 x - 2 = 0
Factor constant terms from the left hand side:
2 (6 x - 1) = 0
Divide both sides by 2:
6 x - 1 = 0
Add 1 to both sides:
6 x = 1
Divide both sides by 6:
Answer:  x = 1/6
riadik2000 [5.3K]2 years ago
4 0
It is look so x=? so if it was 2 then it would be
2-1 = 2+1
_______          which is wrong so that's how to do it which is x?
2+5 = 2-7 

the answer is 1/7 so ya its D.1/7 :) hope i helped
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2 years ago
If C(x) is the total cost incurred in producing x units of a certain commodity, then the average cost of producing x units of th
nataly862011 [7]

Answer:

x  =  2000 cameras

Step-by-step explanation:

C(x)     Total cost in producing  x units

C- = C(x) /x   Average cost of producing x units    x > 0

Cannon Precision Instrument

C (x)   Total monthly cost for producing x units of M1 cameras

is    C(x)  =  0.0025x²  + 80x  +  10000

Then average cost of producing x cameras M1 is

C-(x)  =  ( 0.0025x²  + 80x  +  10000)  /x

C-(x)  =   0.0025x  + 80  + 10000/x

Taking derivatives on both sides of the equation

C-´(x)   =  0.0025   -  10000/x²

Then

C-´(x)   = 0

( 0.0025x² - 10000 ) / x²   =  0

0.0025x² - 10000 =  0

x²  =  10000 /0.0025         x²  = 4000000

x  =  2000 cameras

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3 years ago
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3 years ago
Witch of the following are the factors of 4b^2 - 16?
luda_lava [24]
<span>4b^2 - 16 = (2b + 4)(2b - 4)

</span>difference of squares<span> 
a^</span>2<span> – b^</span>2<span> = (a + b)(a – b) </span><span>

</span>
4 0
3 years ago
(3.45 x 103) + (1.23 x 103)​
mr Goodwill [35]

Answer:

482

Step-by-step explanation:

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6 0
3 years ago
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