Determine weather each set of sides lengths represent and acute, obtuse, or right triangle. 9ft, 12ft, 15ft

Which of the following points is collinear with (-2,1) and (0,3)

Me find the value of x each figure.

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?