I left Pickton in my car at 8.30 am, just as a bus from Orford was pulling into the bus station. The buses leave Orford for Pickton at 30-minute intervals. 10 minutes later, another Orford-Pickton
bus passed me.
Assuming that both the buses and I travel at constant speeds, which one of the following
additional pieces of information do I need in order to know when I will arrive at Orford?

4+4+2x

or

2x+8

step-by-step explanation:

the first option i believe

step-by-step explanation:

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.