leleedge1 leleedge1
  • 05-07-2021
  • Mathematics
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Find the value of x. PLEASE HELP ASAP

Find the value of x PLEASE HELP ASAP class=

Respuesta :

leena
leena leena
  • 05-07-2021

Hi there!

[tex]\large\boxed{A. \text{ } 7}[/tex]

The following trapezoidal theorem states that:

Middle segment = average of top and bottom side

Thus:

M = 1/2(b1 + b2)

21 - x = 1/2(17 + 11)

Solve:

21 - x = 1/2(28)

21 - x = 14

Subtract 21 from both sides:

-x = 14 - 21

-x = -7

Multiply both sides by -1:

x = 7

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