799927
799927 799927
  • 21-07-2020
  • Mathematics
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What is the value of r? What is the length of EB?

What is the value of r What is the length of EB class=

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wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 21-07-2020

Answer:

r=9

EF = 55

Step-by-step explanation:

CF = ED

9r - 6 = 8r+3

Subtract 8r from each side

9r-8r - 6 = 8r-8r+3

r-6 =3

Add 6 to each side

r-6+6 = 3+6

r = 9

EF= CD = 4r+19

            = 4*9+19

              =36+ 19

               =55

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