The value of x, ∠DEA, and ∠AEB are 14.5, 39.5, and 140.5 degrees
Supplementary angles are angles that sum up to 180degrees
From the given diagram, we can see that:
m<DEA + m<AEB = 180
x+25+9x+10 = 180
10x + 35 = 180
10x = 180 - 35
10x = 145
x = 145/10
x = 14.5
Get ∠DEA
∠DEA = x + 25
∠DEA = 14.5 +25
∠DEA = 39.5 degrees
Get ∠AEB:
∠AEB = 9x+10
∠AEB = 9(14.5) + 10
∠AEB = 130.5 + 10
∠AEB = 140.5 degrees
Hence the value of x, ∠DEA, and ∠AEB are 14.5, 39.5, and 140.5 degrees
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