kimkum233
kimkum233 kimkum233
  • 26-01-2021
  • Mathematics
contestada

help me please please ​

help me please please class=

Respuesta :

altavistard
altavistard altavistard
  • 26-01-2021

Answer:

3a^2 - 7a - 6

Step-by-step explanation:

Find the average length of the light gray shaded figure.  It is:

4a + 5 + 2a - 1        6a + 4

--------------------- = --------------- = 3a + 2

            2                      2

Now multiply this average length, 3a + 2, by the width, a - 3:

Area of light gray figure is (3a + 2)(a - 3) = 3a^2 - 7a - 6

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