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Nat2105 [25]
3 years ago
5

(6x^2-3)-(4x+7) Help fast please!!

Mathematics
1 answer:
iren2701 [21]3 years ago
6 0

Answer:

6x^2-4x-10

Step-by-step explanation:

Do you need to show work?

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Step-by-step explanation:

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Natoshia's den is 4 feet longer than it is wide. If the​ den's area is 320 square​ feet, what are the dimensions of the​ room?
julsineya [31]

Dimensions : 16 x 20

  • Let the width be x
  • then the length: x + 4

<h3>                      area of rectangle = Length * Width</h3>

solving steps:

  • (x+4)(x) = 320
  • x² + 4x = 320
  • x² + 4x - 320 = 0
  • x² +20x -16x -320 = 0
  • x(x + 20) -16(x+20) = 0
  • (x-16)(x+20) = 0
  • x = 16, -20
  • x = 16                     [ As length or width can never be negative ]

<u>So we found Width = 16 feet</u>

Length:

  • 16 + 4
  • 20 feet
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A bracelet that regularly sells for $89 is on sale for 25% off. Find the sale price of the bracelet.
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the sale price of the bracelet is $66.75

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