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What is the measure of angle ECD? a 79 b 90 c 9 d 17

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PRATHEESH PC · Answer 1 · 2022-07-22T13:15:50+0000

Answer:

(A) 79º

Step-by-step explanation:

We can set up a simple equation to solve this, by using supplementary angles and the information that the problem has given:

x - 8 + 90 + 4x + 3 = 180

Now, we can solve:

x - 8 + 4x + 3 = 90

x - 5 + 4x = 90

5x = 95

x = 19

Since we found x, we can now substitute it into the equation of angle ECD:

4(19) + 3 = 79 = m<ECD (A)

Hope this helps!!

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