2 years ago

4. In the diagram below, ZABD = (4x + 3)º and DBC = (7x-6)º.

Mathematics

1 answer:

blsea [12.9K]2 years ago

4 0

Answer:

Step-by-step explanation:

a) ∠ABD + ∠DBC = 90°

4x - 3 + 7x - 6 = 90

4x + 7x - 3 - 6 = 90

11x - 9 = 90

11x = 90 + 9

11x = 99

x = 99/11

x = 9

∠ABD = 4*9 - 3 = 36 - 3 = 33

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