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Ghella [55]
3 years ago
5

A computer is regularly priced at a store for $380. Over a holiday weekend, the store offers a %15 discount. How much money woul

d you save if you bought the computer over the weekend?
Mathematics
2 answers:
natali 33 [55]3 years ago
6 0

Answer:

$57

Step-by-step explanation:

$380x0.85=$323

$380-$323=$57

yawa3891 [41]3 years ago
4 0

Answer:

  $57

Step-by-step explanation:

15% of $380 is ...

  0.15 × $380 = $57 . . . . the amount of the discount = your savings

_____

You will also save the tax on $57, but that information is not included in this problem statement.

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2. What step did Mikayla do wrong when she solved this
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Read 2 more answers
Solve the system by elimination. (Please explain how to do it)
Naddika [18.5K]

Apply to Row 2 : Row 2 + Row 1

2x + 2y + 3z = 0

y + 4z = -3

2x + 3y + 3z = 5

Apply to Row 3: Row 3 - Row 1

2x + 2y + 3z = 0

y + 4z = -3

y = 5

Apply to Row 3: Row 3 - Row 2

2x + 2y + 3z = 0

y + 4z = -3

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Simplify rows

2x + 2y + 3z = 0

y + 4z = -3

z = -2

<em>Note that the matrix is in echelon form now. The next steps are for back substitution.</em>

Apply to Row 2: Row 2 - 4 Row 3

2x + 2y + 3z = 0

y = 5

z = -2

Apply to Row 1: Row 1 - 3 Row 3

2x + 2y = 6

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z = -2

Apply to Row 1: Row 1 - 2 Row 2

2x = -4

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Simplify the rows

<u>x = -2</u>

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3 years ago
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