A factory produces 500 batteries every hour, but 1% of the batteries are defective and are thrown away. The factory receives an order to produce 15,000 batteries. Which represents an equation for the situation and a solution for the number of hours needed to produce 15,000 batteries?

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

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