jetblackcap jetblackcap
  • 03-06-2019
  • Mathematics
contestada

Please help me out please

Please help me out please class=

Respuesta :

mathstudent55
mathstudent55 mathstudent55
  • 03-06-2019

Answer:

31

Step-by-step explanation:

For rectangle ABCD, AC and BD are the lengths of the diagonals. The diagonals of a rectangle are congruent.

AC = BD

3x + 7 = 131 - x

Add x to both sides.

4x + 7 = 131

Subtract 7 from both sides.

4x = 124

Divide both sides by 4.

x = 31

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