The data sets below show the quiz scores for two classes. Class A. 89 94 91 92 98 89 Class B 71 70 85 81 75 Which of the following statements correctly describes the degree of variability of the classes? A. Class A has a higher degree of variability because its range is 3 times larger than the range of Class B.

B. Class B has a higher degree of variability because its range is 3 times larger than the range of Class A.

C. Class A and B have the same degree of variability because they have the same range.

PLEASE I NEED THE ANSWER RIGHT NOW !!​

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

step-by-step explanation:

a and d

-4, -2, 1, 4

step-by-step explanation:

domain = x values

range = y values

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.