If martha has 4/5 of a tank of gas and uses 1/10 each day, how many days will it take to empty?

What other information do you need to prove triangle dac=bca by asa

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?

Which is the focus of a parabola with equation y2=4x