Find the centre, radius and sketch the graph of the circle (X*X) +(y*y) -4x+8y-5=0.
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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?

Ineed someone to me answer my question i have to have this done and knocked out

Lana's family entered a 5-kilometer race lana's average step length is about 0.5 meter how many steps will she need to take the finish