An amusement park has opened a new roller coaster. it is so popular that people are waiting for up to 2 hours for a 2 dash minute ride. concerned about how patrons feel about this, they survey every 11th person in the line for the roller coaster, starting from a randomly selected individual. the survey asks whether the patrons think it is worthwhile to wait a long time for the ride and whether they'd like the amusement park to install still more roller coasters. what biases might cause a problem for this survey?

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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.

the answer is a and d

(1 km=1000m, 1m=100 cm)