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Ber [7]
3 years ago
10

Solve the system of equations by the substitution method

Mathematics
1 answer:
Studentka2010 [4]3 years ago
6 0

Answer:

  • 3y-4x=13
  • 3×4-4x=13
  • 12-4x=13
  • 12-13=4x
  • -1=4x
  • -1/4=x
  • ☆x=-1/4and
  • I am not sure about it but I think there should be y=3+x in the question
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The rectangle has an area of x2+13x+36 square meters and a length of x+9 meters.
Brut [27]

Answer:The answer is 58

Step-by-step explanation:

4 0
4 years ago
A carpet manufacturer is inspecting for flaws in the finished product. If there are too many blemishes, the carpet will have to
balandron [24]

Answer:

Neither binomial nor normal distribution

Step-by-step explanation:

In binomial distribution Sumner of trials are fixed and there is only two outcomes either success or failure

But in this question there are no fixed trials and outcomes is not proper so this is not a binomial distribution.

In normal distribution there is information of mean and variance which is also not give in the question so it is also nit a normal distribution

So it is neither binomial nor normal distribution

7 0
3 years ago
WILL MARK B!<br> Please I need help I have a quiz
MArishka [77]

Answer:

a) 2x² - x + 3 = x(2x + 1) - 2x

<=> 2x² - x + 3 = 2x² + x - 2x

<=> 3 - x = - x

<=> 3 = 0

=> no solution

b) x/2 - x/3 - x/4 = 1/12

\frac{6x}{12}  -  \frac{4x}{12}  -  \frac{3x}{12}  =  \frac{1}{12}  \\  \\  \frac{ - x}{12}  =  \frac{1}{12}  \\  \\  =  >  - x = 1 \\  \\  \\  <  =  > x = 1

=> the euqation has the solution x = 1

c) |x - 5| = 2|x|

=> x - 5 = 2x

or x - 5 = -2x

<=> x = -5

or 3x = 5

<=> x = -5

x = -5or x = 5/3

d) defined conditions: 2 - x 》 0

<=> x 《 2

we have:

\sqrt{x + 4}  = 2 - x \\  <  =  > x + 4 = (2 - x) {}^{2}   \\  <  =  > x + 4 =  {x}^{2}  - 4x + 4 \\  <  =  >  {x}^{2}  - 5x = 0 \\  <  =  > x(x - 5) = 0 \\

<=> x = 0 (because x 《 2)

e)

\sqrt{5}  =  \frac{1}{25 {}^{x} }  \\   =  > 5 =  \frac{1}{25 {}^{2x} }  \\  <  =  > 5.25 {}^{2x}  = 1  \\ <  =  >  5.5 {}^{4x}  = 1 \\  <  =  > 5 {}^{4x + 1}  = 1 \\  =  > 4x + 1 = 0

<=> x = -1/4

3 0
3 years ago
Read 2 more answers
5
AnnZ [28]

Answer:

c is the correct answer mate

Step-by-step explanation:

have a greate day bye

3 0
3 years ago
52 thousandths in Scientific notation
Katyanochek1 [597]

Answer:

52 thousandths is 5.2 x 10^-2 (0.052)



8 0
3 years ago
Read 2 more answers
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