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jolli1 [7]
2 years ago
7

Solve for u. 20 − (u · 0.9) = 4.7

Mathematics
1 answer:
alina1380 [7]2 years ago
3 0

Answer:

20 - 0.9u = 4.7

-0.9u = 4.7 - 20

-0.9u = -15.3

Divide both sides by - 0.9

u = 17

Hope this helps.

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The area of a storage shed floor is 20 ft2. The length is 3 more than twice the width. Find the dimensions of the storage shed f
vladimir1956 [14]

Answer:

  • 2.5 ft wide
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Step-by-step explanation:

The given relation between length and width can be used to write an expression for area. The equation setting that equal to the given area can be solved to find the shed dimensions.

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<h3>Given relation</h3>

Let x represent the width of the shed. Then the length is (2x+3), and the area is ...

  A = LW

  20 = (2x+3)(x) . . . . . area of the shed

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<h3>Solution</h3>

Completing the square gives ...

  2x² +3x +1.125 = 21.125 . . . . . . add 2(9/16) to both sides

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The width of the shed is 2.5 feet; the length is 2(2.5)+3 = 8 feet.

8 0
1 year ago
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docker41 [41]

Answer:

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Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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4 0
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