A professional triathlete competes in an Austin bike race. She takes 1.5 hours to travel the entire course. Her speed varies from 0 kilometers per hour (km/hr), while stopped for a tire change, to 30 km/hr while riding downhill. The illustration shows her trip distances for each section of the race. What is the rider's average speed in km/hr during the 1.5 hour bike race?

answer: ok

step-by-step explanation:

t hope this

:

answer:   the paragraph proof is mentioned below.

step-by-step explanation:

given: in a δxwy where

such that, ∠wzx ≅ ∠yzx and zw≅zy

we have to prove that: segment zx is a perpendicular bisector of segment wy.

prove: since, zw≅zy ⇒ ∠wzy is a supplementary angle.

then, ∠wzy= 180°

⇒∠wzx + ∠yzx = 180° ( because xz divides ∠wzy into two parts)

but, ∠wzx ≅ ∠yzx ( given)

⇒∠wzy+∠wzy=180° ( by substitution)

⇒2∠wzy=180°

⇒∠wzy=90°

⇒∠wzy=∠yzx =90°

therefore, xz⊥wy where wz=zy

⇒zx is a perpendicular bisector of wy.