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Ilya [14]
3 years ago
5

SOLVE FOR X -5x + 9 = 24

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

Answer:

<u>x = -3</u>

Step-by-step explanation:

-5x + 9 = 24

move the nine to the other side

-5x = 15

divide

x = -3

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If the length of a rectangle is three times it’s width and it’s parameter is 24cm what is the area
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Answer:

Area = 27 cm²

Step-by-step explanation:

let L be the length of the rectangle

    w the width

    P the perimeter

    A the area

<u>Formulas</u> :

P = 2×(L + w)

A = L × w

<u>We are Given</u> :

L = 3w

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⇔ 24 = 2×(3w + w)

⇔ 24 = 2×4w

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Then

L = 3w = 3×3 = 9

We obtain L = 9 and w = 3.

Then

A = L × w

  = 9 × 3

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