The prince david ship headed south at an average speed of 20 mph later the prince albert traveled north with an average speed 20 mph after the prince david ship had traveled for eight hours the ships were 280 mi apart . how many hours did the prince david ship travel ?

98 points djdjsi zisksis sjsjsi sisksj sksjdj sksks sjsisj

a: 1/6, j: 1/4

step-by-step explanation: you are welcome

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc