Iamsierra1 Iamsierra1

05-10-2020
Mathematics

contestada

Brainliest to the first person and the steps!

Brainliest to the first person and the steps class=

Respuesta :

24jiang14 24jiang14

05-10-2020

Answer:

13

Step-by-step explanation:

FC + CB = 1/2 CD + 1/2 AB = 1/4 DE + 1/2 AB

= 1/4 * 12 + 1/2 * 20 = 3 + 10 = 13

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