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viktelen [127]
3 years ago
5

△DEF is shown below.Triangle DEFWhat is m∠DEF?​

Mathematics
1 answer:
S_A_V [24]3 years ago
4 0

Answer:

m∠DEF = 50

Step-by-step explanation:

∠DEG = ∠GEF

3y + 4 = 5y - 10

subtract 4 from both sides

3y = 5y - 14

subtract 5y from both sides

-2y = -14

divide by -2

y = 7

Add 7 into the equations:

3y + 4 + 5y - 10

3(7) + 4 + 5(7) - 10

21 + 4 + 35 - 10

25 + 25

50

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