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Step-by-step explanation:

Answer:
Sometimes they are called algebraic postulates.
Step-by-step explanation:
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15/100=0.15
45/0.15=300
so 45 is 15% of 300
If A and J are complementary angles, that means that when they are added together, they equal 90 degrees. We can set up the equation 5x+30+4x+15=90.
5x+30+4x+15=90
9x+45=90
9x=45
x=5
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