mubashar69
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Can someone help me?


The areas of the two rectangles below are equal. There are two possible areas. One is 105 u2

What is the other one?

Can someone help me The areas of the two rectangles below are equal There are two possible areas One is 105 u2 What is the other one class=

Respuesta :

Answer:

144 u²

Step-by-step explanation:

⇒ Areas are equal

  • (6x + 15)(2x + 7) = (4x + 7)(2x + 15)
  • 12x² + 42x + 30x + 105 = 8x² + 60x + 14x + 105
  • 4x² = 2x
  • x = 1/2

Calculating the areas

  1. (6 x 1/2 + 15)(2 x 1/2 + 7) = 18 x 8 = 144
  2. (4 x 1/2 + 7)(2 x 1/2 + 15) = 9 x 16 = 144

The other one is 144 u²

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