Question

Es Urgente es para hoy

Answer 1

8) AC + BC = 36 , Calcular: x

●--------///-------●-------///--------●------------------●

A |------ y ------| E |----- y ------| B |---- -y + x ----| C

|--------------------- x ----------------|

AC = AE + EB + BC = y + y -y + x = y + x

BC = - y + x

AC + BC = y + x - y + x

AC + BC = 2x

AC + BC = 36

ENTONCES: 2x = 36

x = 36/2

Rpta: x = 18

9) AB = 4a , BC = 4 , CD = 2a , AD = 31

●-- 2a --|-- 2a --●------ 4 -------●--- a ---|-- a --●

A |----- 4a ------| B |----- 4 -----| C |---- 2a ----| D

AD = AB + BC + CD

AD = 4a + 4 + 2a

AD = 6a + 4

AD = 31

ENTONCES: 6a + 4 = 31

6a = 31 - 4

6a = 27

a = 27/6

a = 4,5

NOS PIDEN : 2a + 4 + a

3a + 4

3(4,5) + 4

13,5 + 4

Rpta: 17,5