After 1.4 seconds, t = 1.4. h(t) = 150 - 9(1.4) Multiply 9 by 1.4 to get 12.6. h(t) = 150 - 12.6 Subtract 12.6 from 150 to get 137.4. h(t) = 137.4. The height of the ball would be 137.4 after 1.4 seconds. Hope this helps!
Yes, because when the side lengths of a triangle are in the ratio 3: 4: 5, then it is a right triangle. These sides are 6: 8: 10, then the triangle is a right one.