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galben [10]
3 years ago
15

ABC is isosceles.m < a = 3x + 40 and m < c = x + 50what is m < a ??​

Mathematics
2 answers:
Tatiana [17]3 years ago
8 0

Answer:

solution given:

m<a=m<c

3x+40=x+50

3x-x=50-40

x=10/2=5

now

<a=3×5+40=55°

m<a=55° is your answer

il63 [147K]3 years ago
7 0

Answer:

  • 55°

Step-by-step explanation:

<u>It is assumed the angles A and C are congruent:</u>

  • 3x + 40 = x + 50
  • 3x - x = 50 - 40
  • 2x = 10
  • x = 5

m∠A = 3*5 + 40 = 55°

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