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Sagot :
Answer:
x = 10
Step-by-step explanation:
90 = 4x + 5x
90= 9x
90 divided by 9 = 10
Answer:
it is given , angle ABC = 90
then,
5x+4x = 90
9x = 90
x = 90/9
x = 10
first angle is 40
second angle is 50
hope it helps
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