Found this on socratic !!! hope this helps !!!!
Angle R= 36°
180-68-76=36°
12 to 16 because all ratios are equivalent
She ran the last 100 meters in 2:15 -1:25 = 0:50, so her average speed was
... (100 m)/(50 s) = 2.0 m/s
Answer:
Step-by-step explanation: