mncowan mncowan
  • 30-06-2019
  • Mathematics
contestada

Find the value of Z.
A)7
B)9
C)11
D)12

Find the value of Z A7 B9 C11 D12 class=

Respuesta :

Аноним Аноним
  • 30-06-2019
As per the isosceles triangle theorem, if the two base angles are congruent then the legs are also congruent, so we must set the two legs equal to each other:

2z - 15 = 9

Add 15 to both sides:

15 - 15 = 0
15 + 9 = 24

Divide 2 from each side:

2z = 24

2z/2 = z

24/2 = 12

z = 12

Hence, the answer would be D: z = 12

Answer Link
konrad509
konrad509 konrad509
  • 30-06-2019

[tex]2z-15=9\\2z=24\\z=12[/tex]

Answer Link

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