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levacccp [35]
3 years ago
12

Which of the following is the solution?

Mathematics
1 answer:
Lina20 [59]3 years ago
6 0

Answer:

A is the answer

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The number of telephone calls that arrive at a phoneexchange is often modeled as a Poisson random variable. Assumethat on the av
Elza [17]

Answer:

<u><em>note:</em></u>

<u><em>solution is attached due to error in mathematical equation. please find the attachment</em></u>

7 0
3 years ago
HELPPPPPPPPPPP APPARENTLY MY ANSWER WAS WRONG ​
Nonamiya [84]

Answer:

d= -12 + 925

Step-by-step explanation:

decrease means negative and Increase means up (positive) so probably that why your answer was wrong

8 0
2 years ago
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Drag the tiles to the correct boxes to complete the pairs. Match the systems of equations with their solutions.
devlian [24]
<h3>Answer:</h3>

4, 1, 2, 3 . . . . . the systems of equations corresponding to the given solutions, in order

<h3>Step-by-step explanation:</h3>

When there are this many to do, it is convenient to let a calculator or spreadsheet help. Most will work best with integer coefficients, so the pairs of equations can be written ...

1.

  • x - y = 25
  • 2x + 3y = 180 . . . solution (51, 26)

2.

  • 2x - 3y = -5
  • 11x + y = 550 . . . solution (47, 33)

3.

  • x - y = 19
  • -12x + y = 168 . . . solution (-17, -36)

4. Here, we have a problem. The given equations don't match any solutions. The only remaining solution is (-31, -56), and it gives a value of -6 for the first equation, not 6. The second equation needs parentheses to make it work. We think your problem is ...

... 2x -y = -6, (x -305)/3 = 2y

Recast the way the others are above, these equations become ...

  • 2x - y = -6
  • x - 6y = 305 . . . solution (-31, -56)

_____

<em>Comment on solution to systems of equations</em>

The solution to ...

  • ax +by = c
  • dx +ey = f

is ...

  • x = (bf -ec)/(bd -ea)
  • y = (cd -a·f)/(bd -ea) . . . . . (same denominator as for x)

This is a modified form of Cramer's rule. It is modified in that both numerator and denominator have the terms swapped (are the negative of the terms in the classic Cramer's rule). This form can be easy to remember, as the pattern is fairly simple. (Look at where the coefficients are in the equations. Use your spatial memory to remember the pattern.)

<u>Example</u>:

Applying these solution equations to system (4), we have ...

... x = ((-1)·305 -(-6)(-6))/((-1)·1 -(-6)·2) = -341/11 = -31

... y = ((-6)·1 -305·2) = -616/11 = -56

6 0
3 years ago
Read 2 more answers
? What is the greatest common factor for 12 and 54
Reil [10]
The greatest common for 12 and 54 is 6.
7 0
2 years ago
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How is 1/2+1/4 solved differently than 1/2+1/3
MrRa [10]
To solve 1/2+1/4 you only need to change the denominator of 1/2 to solve and for 1/2+1/3 you have to change the denominator of both fractions in order to solve. I think that’s what it’s asking
4 0
3 years ago
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