kitefreeman247 kitefreeman247

19-06-2018
Mathematics

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ZB is 3x-5 BA is x+3
B is the midpoint of ZA. Find the length of ZA
A. 7
B. 9
C. 11
D. 14

Respuesta :

Banabanana Banabanana

20-06-2018

If B is the midpoint of ZA, then ZB = BA
3x-5 = x+3
3x - x = 3 + 5
2x = 8
x = 8/2
x = 4

ZA = ZB + BA
= 3x-5 + x+3
= 3*4 - 5 + 4 + 3
= 12 - 5 + 7
= 14

Answer: D. 14

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