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slavikrds [6]
3 years ago
8

Mary is making pillows for her Life Skills class. She bought 2.5 yards of fabric. Her total cost was $15. What was the cost per

yard?
$10/yard
$6/yard
$7.50/yard
Mathematics
2 answers:
Vera_Pavlovna [14]3 years ago
7 0
$6/yard
I solved by dividing the total cost by the amount of yards of fabric.
m_a_m_a [10]3 years ago
3 0

Answer:$6/Yard

Step-by-step explanation:

You make it into an algebraic expression, 2.5x=15.

Then, you divide both sides by 2.5

2.5x=15,   2.5x/2.5 =x, 15/2.5=6.

x=6.

x represents the amount of dollars per yard.

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Answer:

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Step-by-step explanation:

The equations need to match the problem statements. If we let C and S represent the costs of Cherry and Sweet potato pies, respectively, then the revenue from each sale can be expressed as an equation.

  1 cherry and 7 sweet potato for $114   ⇒   C +7S = 114

  14 sweet potato and 11 cherry for $309   ⇒   11C +14S = 309

Note that we have used C and S in the second equation in the same order as they appeared in the first equation, even though the problem statement has that order reversed. This facilitates solving the equations using elimination or Cramer's rule.

These equations match Option 4.

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The cost of a cherry pie can be found by eliminating S from the equations. We can do that by subtracting twice the first equation from the second:

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  9C = 81 . . . . . simplify

  C = 9 . . . . . . . divide by 9

The cost of each cherry pie is $9.

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goldenfox [79]

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