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vlada-n [284]
3 years ago
11

Can someone please help me on this problem

Mathematics
1 answer:
guapka [62]3 years ago
5 0
Can u give me a more clearer picture
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Four cookies and three cupcakes code $13.25. Five cookies and two cupcakes cost $11.75. Give the system of equations that could
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Answer:

  • cookie: $1.25
  • cupcake: $2.75

Step-by-step explanation:

Let x and y represent the cost of a cookie and a cupcake, respectively.

  4x +3y = 13.25

  5x +2y = 11.75 . . . . . . the system of equations

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By Cramer's rule:

  x = (3(11.75) -2(13.25))/(3(5) -2(4)) = 8.75/7 = 1.25

  y = (13.25(5) -11.75(4))/7 = 19.25/7 = 2.75

The cost of one cookie is $1.25; the cost of one cupcake is $2.75.

_____

Cramer's rule gives the solution to the system of equations ...

  ax +by =c

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  x = (bf -ec)/∆

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3 years ago
4r+9r-11r+7r= Simplify Combine like terms
Veseljchak [2.6K]

Answer:

9r

Step-by-step explanation:

4r+9r-11r+7r

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I wish I can help but get Photomath it’ll help you trust :) good luck
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A baseball diamond is a square that is 90feet on each side. What is the distance a catcher has to throw the ball from home to se
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Answer:

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hope this helps :D


4 0
3 years ago
Read 2 more answers
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