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Answer:
First option: 
Step-by-step explanation:


Multiply both sides by y:







Answer:158.99
Step-by-step explanation:
The reason why it is equal is because when you divide you are really subtracting so 10^15-10^4 so 15-4 equals 11
Answer:
∠ ADC = 145°
Step-by-step explanation:
The central angle is equal to the measure of the arc that subtends it, then
∠ ADE = 70°
∠ EDC = 75°
∠ ADC = ∠ ADE + ∠ EDC = 70° + 75° = 145°