PLEASE HELP ASAP Given: Quadrilateral PQRS is a rectangle Prove: PR = QS What is the reason for the third step in this proof? A: Corresponding sides of congruent triangles are equal in length. B: The diagonals of a rectangle bisect each other. C: SSS criterion for congruence. D: Opposite sides of a parallelogram are congruent.

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b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

6 cm

step-by-step explanation:

answer: the answer is 110