How many triangles can be constructed with angles measuring 80º, 80º, and 40º? more than one one none

What could explain what happened when the time was equal to 120 minutes

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists