Ben performed a transformation on trapezoid PQRS to create PQ'R'S, as shown in the figure below:
10 +
109-8-7-6-5-4-3-21 + 1 2 3 4 5 6 7 8 9 10
R
Q
R
What transformation did Ben perform to create P'Q'R'S? (6 points)
Rotation of 90° counterclockwise about the origin
O Reflection across the y-axis
Reflection across the line of symmetry of the figure
O Rotation of 270° counterclockwise about the origin

step-by-step explanation:

the true ones are a b and d

hello,

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: